Nevada: Individual County Chronologies

Nevada Atlas of Historical County Boundaries

John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; John P. Ford, Historical Compiler; Douglas Knox, Book Digitizing Director; Emily Kelley, Research Associate and Digital Compiler; Laura Rico-Beck, GIS Specialist and Digital Compiler; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant

Copyright The Newberry Library 2009

Arizona Territory

24 Feb 1863
The United States created Arizona Territory from the western portion of New Mexico Territory. Map depicts that part of Arizona Territory in present Nevada. (U.S. Stat., vol. 12, ch. 56[1863]/pp. 664-665; Ariz. Terr. Laws 1854, 1st assy./ pp. vii-viii; Van Zandt, 162)
10 Nov 1864
Arizona Territory lost all non-county area in present Nevada to creation of MOHAVE (Ariz.). (Howell Code, Ariz. Terr. Laws 1864, 1st assy., ch. 2/ pp. 24-25)

BEAVER (Utah)

05 Jan 1856
BEAVER (Utah) created by Utah Territory from IRON (Utah); BEAVER included parts of present Utah, Colorado, and Nevada. (Utah Terr. Laws 1855, 5th sess., sec. 9/p. 7)
18 Jan 1861
BEAVER (Utah) lost to HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct). (Utah Terr. Laws 1861, 10th sess., p. 19)
28 Feb 1861
The United States created Colorado Territory from Nebraska, New Mexico, and Utah Territories, and from the former Kansas Territory. BEAVER (Utah) lost to Colorado Territory and was eliminated from present Colorado; area within present Nevada was unchanged. (U.S. Stat., vol. 12, ch. 59[1861]/pp. 172-177; Van Zandt, 141)
17 Jan 1862
BEAVER (Utah) gained from MILLARD (Utah), SANPETE (Utah), and ST. MARY'S (Utah Territory, extinct). (Utah Terr. Laws 1861, 11th sess., sec. 3/p. 47)
14 Jul 1862
BEAVER (Utah) lost to Nevada Territory in present Nevada when Nevada Territory gained from Utah Territory. (U.S. Stat., vol. 12, ch. 173 [1862], p. 575; Van Zandt, 158-160)
16 Jan 1865
BEAVER (Utah) lost to creation of PIUTE (Utah); area within present Nevada was unchanged. (Utah Terr. Laws 1864, 14th sess., p. 16)
05 May 1866
BEAVER (Utah) lost to the state of Nevada when Nevada gained from Utah Territory; BEAVER eliminated from Nevada. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158-159)

BERNALILLO (New Mex.)

09 Jan 1852
BERNALILLO (New Mex.) boundaries redefined by New Mexico Territory. BERNALILLO gained from VALENCIA (New Mex.) and non-county area in New Mexico Territory; exchanged with SAN MIGUEL (New Mex.); lost to SANTA FE (New Mex.). BERNALILLO included parts of present Nevada, New Mexico, and Arizona. (N.M. Terr. Laws 1851, 1st assy., 2d sess./p. 292)
24 Feb 1863
BERNALILLO (New Mexico) lost to creation of Arizona Territory; BERNALILLO eliminated from present Nevada. (U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165)

BOX ELDER (Utah)

17 Jan 1862
BOX ELDER (Utah) gained all of GREASEWOOD (Utah Territory, extinct) and MALAD (Utah Territory, extinct); gained from DESERT (Utah Territory, extinct), TOOELE (Utah), and ST. MARY'S (Utah Territory, extinct); lost to CACHE (Utah) and WEBER (Utah), and lost islands in Great Salt Lake that were attached to GREAT SALT LAKE (now SALT LAKE, Utah) "for election, revenue and judicial purposes." BOX ELDER included territory in present Utah and Nevada. (Utah Terr. Laws 1861, 11th sess., sec. 12/p. 49)
14 Jul 1862
BOX ELDER (Utah) lost to Nevada Territory in present Nevada when Nevada Territory gained from Utah Territory. (U.S. Stat., vol. 12, ch. 173 [1862], p. 575; Van Zandt, 158-160)
05 May 1866
BOX ELDER (Utah) lost to the state of Nevada when Nevada gained from Utah Territory; BOX ELDER eliminated from Nevada. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158-159)

BULLFROG (extinct)

29 Jun 1987
BULLFROG (extinct) created from NYE. This creation was an effort by Nevada to discourage construction of the Yucca Mountain nuclear waste disposal site. (Nev. Stats. 1987, 64th sess., ch. 819/pp. 2304-2305; Coates, "Nevada Scam")
03 May 1989
BULLFROG lost all territory to NYE. BULLFROG eliminated following a Nevada District Court ruling that the creation was unconstitutional. (Nev. Stats. 1989, 65th sess., ch. 104/pp. 241-246)

CARSON (Utah Terr., extinct)

17 Jan 1854
CARSON (Utah Territory, extinct) created by Utah Territory from IRON (Utah), JUAB (Utah), MILLARD (Utah), and TOOELE (Utah); CARSON not fully organized, attached to MILLARD "for election, revenue, and judicial purposes." CARSON was located entirely in present Nevada. (Utah Terr. Laws 1853, 3rd sess., p. 19)
02 Oct 1855
CARSON (Utah Territory, extinct) fully organized; detached from MILLARD (Utah). (History of Nevada, 38)
05 Jan 1856
CARSON (Utah Territory, extinct) gained from DESERT (Utah Territory, extinct) and WEBER (Utah). (Utah Terr. Laws 1855, 5th sess., sec. 1/p. 5)
14 Jan 1857
CARSON (Utah Territory, extinct) was disorganized and attached to GREAT SALT LAKE (now SALT LAKE, Utah) "for election, revenue and judicial purposes." (Utah Terr. Laws 1856, 6th sess., pp. 11-14)
17 Jan 1859
CARSON (Utah Territory, extinct) was reorganized and detached from GREAT SALT LAKE (now SALT LAKE, Utah). HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct) detached from TOOELE (Utah), attached to CARSON "for election, revenue and judicial purposes." (Utah Terr. Laws 1858, 8th sess., ch. 11/pp. 19-20)
18 Jan 1861
CARSON (Utah Territory, extinct) boundaries were redefined [no change]. (Utah Terr. Laws 1861, 10th sess., p. 19)
02 Mar 1861
The United States created Nevada Territory from Utah Territory; CARSON (Utah Territory) eliminated. (U.S. Stat., vol. 12, ch. 83[1861], pp. 209-210; Van Zandt, 158-160)

Carson City (Ind. City)

01 Jul 1969
The independent city of Carson City was created by the consolidation of ORMSBY and Carson City; ORMSBY eliminated. Act passed 1 April 1969; took effect 1 July 1969. (Nev. Stats. 1969, 55th sess., ch. 213/pp. 287-289; Nevada Constitution, art. 4, sec. 37[A])
23 Apr 1977
Carson City (Ind. City) exchanged with WASHOE when boundary was adjusted along U.S. Highway 395 near Lakeview. (Nev. Stats. 1977, 59th sess., ch. 246/pp. 446-448)

CHURCHILL

25 Nov 1861
CHURCHILL created by Nevada Territory from non-county area. CHURCHILL not fully organized, attached to LYON for administrative and judicial purposes. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 9/p. 52 and p. 291)
19 Dec 1862
CHURCHILL lost to creation of LANDER. (Nev. Terr. Stats. 1862, 2d sess., ch. 58/p. 53)
19 Feb 1864
CHURCHILL fully organized, detached from LYON. (Nev. Terr. Stats. 1864, 3d sess., ch. 62/pp. 86-88)
20 Feb 1864
CHURCHILL lost to LANDER and LYON. (Nev. Terr. Stats. 1864, 3d sess., chs. 108-109/pp. 147-148)
31 Oct 1864
CHURCHILL became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
09 Mar 1865
CHURCHILL lost to NYE. (Nev. Stats. 1865, 1st sess., ch. 106/p. 352)
27 Feb 1869
CHURCHILL gained from HUMBOLDT and LYON, lost to ESMERALDA. (Nev. Stats. 1869, 4th sess., ch. 41/p. 88)
05 Mar 1869
CHURCHILL lost to LANDER. (Nev. Stats. 1869, 4th sess., chs. 74-75/p. 128; Holt, Map of California and Nevada 1869)
26 Feb 1875
CHURCHILL boundary with NYE was redefined [no change]. (Nev. Stats. 1875, 7th sess., ch. 50/p. 102)
22 Mar 1951
CHURCHILL boundary with LYON was adjusted near town of Wadsworth [change too small to map]. (Nev. Stats. 1951, 45th sess., ch. 288/p. 440)
24 Apr 1969
CHURCHILL exchanged with LYON. (Nev. Stats. 1969, 55th sess., ch. 590/pp. 1112-1114)
12 May 1983
CHURCHILL exchanged with WASHOE when boundary was placed on public land survey lines. (Nev. Stats. 1983, 62nd sess., ch. 250/pp. 565-569)

CLARK

01 Jul 1909
CLARK created from LINCOLN. Act passed 5 February 1909; took effect 1 July 1909. (Nev. Stats. 1909, 24th sess., ch. 11/pp. 8-13)
06 Jun 1961
CLARK boundary with MOHAVE (Arizona) was redefined as the result of an Interstate Compact (enacted 24 March 1960 and consented to by the United States on 6 June 1961) "to fix the location of the boundary line between the states of Arizona and Nevada [which] has become indefinite and uncertain because of meanderings in the main channel of the Colorado River" [changes too small to map]. (Ariz. Laws 1960, 24th leg., 2d reg. sess., ch. 69/pp. 174-180; Nev. Stats. 1960, p. 145; Mottaz, 47; U.S. Stat., vol. 75 [1961]/p. 93)
07 Jun 1985
Boundary between CLARK and NYE was adjusted and placed on public land survey lines [change too small to map]. (Nev. Stats. 1985, 63rd sess., ch. 551, p. 1654-1655)

DESERT (Utah Terr., extinct)

03 Mar 1852
DESERT (Utah Territory, extinct) created by Utah Territory from non-county area and TOOELE (Utah); DESERT included parts of present Utah and Nevada. DESERT not fully organized, attached to WEBER (Utah) "for election, revenue, and judicial purposes." (Utah Terr. Laws 1851, 1st sess., sec. 3/p. 162)
05 Jan 1856
DESERT (Utah Territory, extinct) lost to CARSON (Utah Territory, extinct), and lost to creation of HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct). DESERT eliminated from present Nevada. (Utah Terr. Laws 1855, 5th sess., secs. 1-3/pp. 5-6)
18 Jan 1861
DESERT (Utah Territory, extinct) gained from ST. MARY'S (Utah Territory, extinct); DESERT included territory in present Utah and Nevada. (Utah Terr. Laws 1861, 10th sess., p. 19)
17 Jan 1862
DESERT (Utah Territory) lost all territory to BOX ELDER (Utah) and TOOELE (Utah); DESERT eliminated. (Utah Terr. Laws 1861, 11th sess., secs. 12-13/p. 49)

DOUGLAS

25 Nov 1861
DOUGLAS created by Nevada Territory from non-county area. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 2/pp. 50-51)
31 Oct 1864
DOUGLAS became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
19 Mar 1897
Legislature authorized a referendum on the question: "Shall STOREY, ORMSBY, LYON, and DOUGLAS be consolidated into one county?" Referendum was defeated at the 1898 general election by all counties except ORMSBY (extinct), and the consolidation did not take effect. (Nev. Stats. 1897, 18th sess., ch. 94/p. 110; Mottaz, 43)
06 Mar 1899
LYON boundaries were redefined to include the "territory over which LYON has exercised jurisdiction for the period of five years last past." Result was: DOUGLAS lost to LYON. (Nev. Stats. 1899, 19th sess., ch. 30/p. 41; Mottaz, 43)
02 Mar 1965
DOUGLAS exchanged with ORMSBY (extinct). (Nev. Stats. 1965, 53d sess., ch. 94/pp. 130-131)
12 Apr 1967
DOUGLAS exchanged with LYON. (Nev. Stats. 1967, 54th sess., ch. 350/pp. 972-974)
01 Jul 1969
DOUGLAS boundaries were redefined [no change]. (Nev. Stats. 1969, 55th sess., ch. 213/pp. 318-320)

ELKO

05 Mar 1869
ELKO created from LANDER. (Nev. Stats. 1869, 4th sess., ch. 94/pp. 153-154)
01 Mar 1871
ELKO gained from LANDER. (Nev. Stats. 1871, 5th sess., ch. 39/p. 92)
16 Feb 1875
Legislature authorized EUKEKA to gain the Mineral Hill area of ELKO. The act was declared unconstitutional and void by the Nevada Supreme Court in July 1875 [see 7 February 1877]. (Nev. Stats. 1875, 7th sess., ch. 25/pp. 66-67; Mottaz, 41; "Nevada v. Rogers" in Nev. Rpts., 10:250-261)
07 Feb 1877
ELKO lost to EUREKA. Earlier attempt to enact this change on 16 February 1875 was declared unconstitutional and void by the Nevada Supreme Court. (Nev. Stats. 1877, 8th sess., ch. 24/pp. 64-65)
18 Mar 1925
Boundary between ELKO and WHITE PINE was adjusted to run on public land survey lines [no mappable change]. (Nev. Stats. 1925, 32d sess., ch. 113/p. 149)

ESMERALDA

25 Nov 1861
ESMERALDA created by Nevada Territory from non-county area. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 1/p. 50)
19 Dec 1862
ESMERALDA lost to creation of LANDER. (Nev. Terr. Stats. 1862, 2d sess., ch. 58/p. 53)
16 Feb 1864
ESMERALDA lost to creation of NYE. (Nev. Terr. Stats. 1864, 3d sess., ch. 102/p. 143)
20 Feb 1864
ESMERALDA lost to LANDER. (Nev. Terr. Stats. 1864, 3d sess., ch. 108/p. 147)
31 Oct 1864
ESMERALDA became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
09 Mar 1865
ESMERALDA lost to NYE. (Nev. Stats. 1865, 1st sess., ch. 106/p. 352)
27 Feb 1869
ESMERALDA gained from CHURCHILL. (Nev. Stats. 1869, 4th sess., ch. 41/p. 88)
05 Mar 1869
ESMERALDA exchanged with NYE. (Nev. Stats. 1869, 4th sess., ch. 75/p. 128)
26 Feb 1875
ESMERALDA gained from NYE. (Nev. Stats. 1875, 7th sess., ch. 50/p. 102)
01 Mar 1883
ESMERALDA lost to LYON. (Nev. Stats. 1883, 11th sess., ch. 74/p. 99)
10 Feb 1911
ESMERALDA lost to creation of MINERAL. (Nev. Stats. 1911, 25th sess., ch. 13/pp. 10-15)
24 Mar 1913
ESMERALDA lost small area in the city of Tonopah to NYE. (Nev. Stats. 1913, 26th sess., ch. 221/p. 312)

EUREKA

20 Mar 1873
EUREKA created from LANDER. Act passed 1 March 1873; took effect 20 March 1873. (Nev. Stats. 1873, 6th sess., ch. 46/pp. 107-109)
16 Feb 1875
Legislature authorized EUKEKA to gain the Mineral Hill area of ELKO. The act was declared unconstitutional and void by the Nevada Supreme Court in July 1875 [see 7 February 1877]. (Nev. Stats. 1875, 7th sess., ch. 25/pp. 66-67; Mottaz, 41; "Nevada v. Rogers" in Nev. Rpts., 10:250-261)
07 Feb 1877
EUREKA gained from ELKO. Earlier attempt to enact this change on 16 February 1875 was declared unconstitutional and void by the Nevada Supreme Court. (Nev. Stats. 1877, 8th sess., ch. 24/pp. 64-65)
02 Mar 1881
EUREKA gained from WHITE PINE. (Nev. Stats. 1881, 10th sess., ch. 70/p. 104)
31 Jan 1891
At the January 1891 session, the Nevada Supreme Court confirmed the location of the boundary between EUREKA and LANDER based on an 1870 survey line, although in 1887 it was discovered that the line had been erroneously marked one and one-half miles east of its correct location. EUREKA claimed the disputed territory based on the later survey, but the court upheld the earlier line. ("Eureka v. Lander" in Nev. Rpts., 21: 144-150)
16 Apr 1969
EUREKA exchanged with LANDER when boundary was placed on public land survey lines. (Nev. Stats. 1969, 55th sess., ch. 387/pp. 656-657)

GREASEWOOD (Utah Terr., extinct)

18 Jan 1861
GREASEWOOD (Utah Territory, extinct) gained from ST. MARY'S (Utah Territory, extinct); GREASEWOOD included territory in present Utah and Nevada. (Utah Terr. Laws 1861, 10th sess., p. 19)
17 Jan 1862
GREASEWOOD (Utah Territory) lost all territory to BOX ELDER (Utah); GREASEWOOD eliminated. (Utah Terr. Laws 1861, 11th sess., sec. 12/p. 49)

HUMBOLDT (Utah Terr., extinct)

05 Jan 1856
HUMBOLDT (Utah Territory, extinct) created by Utah Territory from DESERT (Utah Territory, extinct), JUAB (Utah), TOOELE (Utah), and WEBER (Utah); HUMBOLDT was located entirely in present Nevada. HUMBOLDT not fully organized, attached to TOOELE "for election, revenue, and judicial purposes." (Utah Terr. Laws 1855, 5th sess., sec. 2/pp. 5-6 and p. 8)
17 Jan 1859
HUMBOLDT (Utah Territory, extinct) detached from TOOELE (Utah), attached to CARSON (Utah Territory, extinct) "for election, revenue and judicial purposes." (Utah Terr. Laws 1858, 8th sess., ch. 11/pp. 19-20)
18 Jan 1861
HUMBOLDT (Utah Territory, extinct) gained from BEAVER (Utah), IRON (Utah), MILLARD (Utah), and WASHINGTON (Utah); HUMBOLDT remained attached to CARSON (Utah Territory, extinct). (Utah Terr. Laws 1861, 10th sess., p. 19)
02 Mar 1861
The United States created Nevada Territory from Utah Territory; HUMBOLDT (Utah Territory) eliminated. (U.S. Stat., vol. 12, ch. 83[1861], pp. 209-210; Van Zandt, 158-160)

HUMBOLDT

25 Nov 1861
HUMBOLDT created by Nevada Territory from non-county area. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 8/p. 52)
19 Dec 1862
HUMBOLDT lost to creation of LANDER. (Nev. Terr. Stats. 1862, 2d sess., ch. 58/p. 53)
31 Oct 1864
HUMBOLDT became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
27 Feb 1869
HUMBOLDT lost to CHURCHILL. (Nev. Stats. 1869, 4th sess., ch. 41/p. 88)
07 Mar 1873
HUMBOLDT lost to LANDER. (Nev. Stats. 1873, 6th sess., ch. 113/p. 189)
18 Mar 1919
HUMBOLDT lost to creation of PERSHING. (Nev. Stats. 1919, 29th sess., ch. 62/pp. 75-76)
19 May 1924
HUMBOLDT exchanged with WASHOE when WASHOE Board of County Commissioners unilaterally changed its eastern boundary to run on public land survey lines. HUMBOLDT, PERSHING, and the state of Nevada acquiesced to this change. WASHOE County Clerk's office was unable to locate this change in board minutes, 1923-1927. (Mottaz, 46; Washoe Board of County Commissioners Minutes, 19 May 1924; Washoe Co. Clerk, email to P. T. Sinko, 26 Sep. 2006)

IRON (Utah)

03 Mar 1852
IRON (Utah) boundaries redefined by Utah Territory. IRON gained non-county area, lost to creation of WASHINGTON (Utah); IRON included parts of present Utah, Colorado, and Nevada. WASHINGTON (Utah) not fully organized, attached to IRON "for election, revenue, and judicial purposes." (Utah Terr. Laws 1851, 1st sess., secs. 12-13/p. 164)
17 Jan 1854
IRON (Utah) lost to creation of CARSON (Utah Territory, extinct). (Utah Terr. Laws 1853, 3rd sess., p. 19)
05 Jan 1856
IRON (Utah) lost to creation of BEAVER (Utah), and lost to WASHINGTON (Utah) when its southern boundary was shifted slightly from 30 degrees, 30 minutes north latitude to four miles north of Fort Harmony. (Utah Terr. Laws 1855, 5th sess., secs. 9-10/p. 7)
23 Feb 1856
WASHINGTON (Utah) fully organized, detached from IRON (Utah). (Larson, 26)
18 Jan 1861
IRON (Utah) lost to HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct). (Utah Terr. Laws 1861, 10th sess., p. 19)
28 Feb 1861
The United States created Colorado Territory from Nebraska, New Mexico, and Utah Territories, and from the former Kansas Territory. IRON (Utah) lost to Colorado Territory and was eliminated from present Colorado; area within present Nevada was unchanged. (U.S. Stat., vol. 12, ch. 59[1861]/pp. 172-177; Van Zandt, 141)
17 Jan 1862
IRON (Utah) gained from ST. MARY'S (Utah Territory, extinct) and WASHINGTON (Utah). (Utah Terr. Laws 1861, 11th sess., sec. 2/p. 46)
14 Jul 1862
IRON (Utah) lost to Nevada Territory in present Nevada when Nevada Territory gained from Utah Territory. (U.S. Stat., vol. 12, ch. 173 [1862], p. 575; Van Zandt, 158-160)
10 Jan 1866
IRON (Utah) lost to WASHINGTON (Utah); area within present Nevada was unchanged. (Utah Terr. Laws 1865, 15th sess., ch. 146, sec. 3/p. 207)
05 May 1866
IRON (Utah) lost to the state of Nevada when Nevada gained from Utah Territory; IRON eliminated from Nevada. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158-159)

JUAB (Utah)

03 Mar 1852
JUAB (Utah) created by Utah Territory from UTAH (Utah) and non-county area; JUAB included parts of present Utah and Nevada. (Utah Terr. Laws 1851, 1st sess., sec. 9/p. 163)
17 Jan 1854
JUAB (Utah) lost to creation of CARSON (Utah Territory, extinct). (Utah Terr. Laws 1853, 3rd sess., p. 19)
18 Jan 1855
JUAB (Utah) exchanged with SANPETE (Utah); area within present Nevada was unchanged. (Utah Terr. Laws 1854, 4th sess., ch. 81/pp. 276-277)
05 Jan 1856
JUAB (Utah) lost to creation of HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct); JUAB eliminated from present Nevada. (Utah Terr. Laws 1855, 5th sess., secs. 2-3/ pp. 5-6)
18 Jan 1861
JUAB (Utah) gained from ST. MARY'S (Utah Territory, extinct); JUAB included territory in present Utah and Nevada. (Utah Terr. Laws 1861, 10th sess., p. 19)
17 Jan 1862
JUAB (Utah) gained small areas from CEDAR (Utah Territory, extinct) and SHAMBIP (Utah Territory, extinct); exchanged with MILLARD (Utah); lost to TOOELE (Utah) and UTAH (Utah). JUAB eliminated from present Nevada. (Utah Terr. Laws 1861, 11th sess., sec. 6/pp. 47-48)

LAKE (extinct), see ROOP (extinct)

LANDER

19 Dec 1862
LANDER created by Nevada Territory from CHURCHILL, HUMBOLDT, ESMERALDA, and Non-County Area. (Nev. Terr. Stats. 1862, 2d sess., ch. 58/p. 53)
20 Feb 1864
LANDER gained from CHURCHILL and ESMERALDA. (Nev. Terr. Stats. 1864, 3d sess., ch. 108/p. 147)
31 Oct 1864
LANDER became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
09 Mar 1865
LANDER lost to NYE. (Nev. Stats. 1865, 1st sess., ch. 106/p. 352)
05 May 1866
LANDER gained from BOX ELDER (Utah), TOOELE (Utah), and MILLARD (Utah) when the state of Nevada gained from Utah Territory. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158, 165; Nev. Stats. 1866, 2d sess., ch. 84/p. 183)
05 Mar 1869
LANDER gained from CHURCHILL, lost to creation of ELKO. (Nev. Stats. 1869, 4th sess., chs. 74, 94/pp. 128, 153-154; Holt, Map of California and Nevada 1869)
01 Apr 1869
LANDER lost to creation of WHITE PINE. (Nev. Stats. 1869, 4th sess., ch. 60/pp. 108-110)
01 Mar 1871
LANDER lost to ELKO. (Nev. Stats. 1871, 5th sess., ch. 39/p. 92)
07 Mar 1873
LANDER gained from HUMBOLDT. (Nev. Stats. 1873, 6th sess., ch. 113/p. 189)
20 Mar 1873
LANDER lost to creation of EUREKA. Act passed 1 March 1873; took effect 20 March 1873. (Nev. Stats. 1873, 6th sess., ch. 46/pp. 107-109)
31 Jan 1891
At the January 1891 session, the Nevada Supreme Court confirmed the location of the boundary between EUREKA and LANDER based on an 1870 survey line, although in 1887 it was discovered that the line had been erroneously marked one and one-half miles east of its correct location. EUREKA claimed the disputed territory based on the later survey, but the court upheld the earlier line. ("Eureka v. Lander" in Nev. Rpts., 21: 144-150)
16 Apr 1969
LANDER exchanged with EUREKA when boundary was placed on public land survey lines. (Nev. Stats. 1969, 55th sess., ch. 387/pp. 656-657)

LINCOLN

26 Feb 1866
LINCOLN created from NYE. (Nev. Stats. 1866, 2d sess., ch. 48/p. 131)
05 May 1866
LINCOLN gained from IRON (Utah), WASHINGTON (Utah), MOHAVE (Ariz.), and PAH-UTE (Arizona Territory, extinct), when the state of Nevada gained from Arizona Territory and Utah Territory. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158, 165; Nev. Stats. 1866, 2d sess., ch. 84/p. 183)
18 Mar 1867
LINCOLN exchanged with NYE. (Nev. Stats. 1867, 3d sess., ch. 90/p. 129)
20 Feb 1875
LINCOLN gained from NYE. (Nev. Stats. 1875, 7th sess., ch. 36/pp. 80-81)
19 Mar 1897
Legislature authorized a county referendum on the question, "Shall the County of LINCOLN be divided?" Referendum was rejected at the 1898 general election by a vote of 67 in favor and 486 opposed. (Nev. Stats. 1897, 18th sess., ch. 97/p. 112; Mottaz, 43)
01 Jul 1909
LINCOLN lost to creation of CLARK. Act passed 5 February 1909; took effect 1 July 1909. (Nev. Stats. 1909, 24th sess., ch. 11/pp. 8-13)

LYON

25 Nov 1861
LYON created by Nevada Territory from non-county area. CHURCHILL not fully organized, attached to LYON for administrative and judicial purposes. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 5/p. 51 and p. 291)
19 Feb 1864
CHURCHILL fully organized, detached from LYON. (Nev. Terr. Stats. 1864, 3d sess., ch. 62/pp. 86-88)
20 Feb 1864
LYON gained from CHURCHILL. (Nev. Terr. Stats. 1864, 3d sess., ch. 109/p. 148)
31 Oct 1864
LYON became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
27 Feb 1869
LYON lost to CHURCHILL. (Nev. Stats. 1869, 4th sess., ch. 41/p. 88)
01 Mar 1883
LYON gained from ESMERALDA. (Nev. Stats. 1883, 11th sess., ch. 74/p. 99)
19 Mar 1897
Legislature authorized a referendum on the question: "Shall STOREY, ORMSBY, LYON, and DOUGLAS be consolidated into one county?" Referendum was defeated at the 1898 general election by all counties except ORMSBY (extinct), and the consolidation did not take effect. (Nev. Stats. 1897, 18th sess., ch. 94/p. 110; Mottaz, 43)
06 Mar 1899
LYON boundaries were redefined to include the "territory over which LYON has exercised jurisdiction for the period of five years last past." Results were: LYON gained from DOUGLAS, and LYON boundary with STOREY was in dispute [see July 1911]. (Nev. Stats. 1899, 19th sess., ch. 30/p. 41; Mottaz, 43)
Jul 1911
During the July 1911 term, the Nevada Supreme Court found in favor of LYON regarding the correct location of its boundary with STOREY [no change]. ("Lyon v. Storey" in Nev. Rpts., 34: 243-264)
28 Mar 1933
LYON gained from MINERAL. (Nev. Stats. 1933, 36th sess., ch. 193/pp. 335-339; Nev. Stats. 1935, 37th sess., ch. 166/p. 361)
22 Mar 1951
CHURCHILL boundary with LYON was adjusted near town of Wadsworth [change too small to map]. (Nev. Stats. 1951, 45th sess., ch. 288/p. 440)
25 Mar 1965
LYON exchanged with WASHOE when boundary was placed on public land survey lines. (Nev. Stats. 1965, 53d sess., ch. 192/pp. 337-338)
12 Apr 1967
LYON exchanged with DOUGLAS. (Nev. Stats. 1967, 54th sess., ch. 350/pp. 972-974)
24 Apr 1969
LYON exchanged with CHURCHILL. (Nev. Stats. 1969, 55th sess., ch. 590/pp. 1112-1114)
01 Jul 1969
LYON boundaries were redefined [no change]. (Nev. Stats. 1969, 55th sess., ch. 213/p. 320)

MILLARD (Utah)

03 Mar 1852
MILLARD (Utah) boundaries redefined by Utah Territory. MILLARD gained from SANPETE (Utah) and non-county area; MILLARD included parts of present Utah and Nevada. (Utah Terr. Laws 1851, 1st sess., sec. 10/pp. 163-164)
17 Jan 1854
MILLARD (Utah) lost to creation of CARSON (Utah Territory, extinct); CARSON not fully organized, attached to MILLARD "for election, revenue, and judicial purposes." (Utah Terr. Laws 1853, 3rd sess., p. 19)
02 Oct 1855
CARSON (Utah Territory, extinct) fully organized; detached from MILLARD (Utah). (History of Nevada, 38)
18 Jan 1861
MILLARD (Utah) lost to HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct). (Utah Terr. Laws 1861, 10th sess., p. 19)
17 Jan 1862
MILLARD (Utah) gained from ST. MARY'S (Utah Territory, extinct), exchanged with JUAB (Utah), lost to BEAVER (Utah) and SANPETE (Utah). (Utah Terr. Laws 1861, 11th sess., sec. 4/p. 47)
14 Jul 1862
MILLARD (Utah) lost to Nevada Territory in present Nevada when Nevada Territory gained from Utah Territory. (U.S. Stat., vol. 12, ch. 173 [1862], p. 575; Van Zandt, 158-160)
10 Jan 1866
MILLARD (Utah) gained from JUAB (Utah); area within present Nevada was unchanged. (Utah Terr. Laws 1865, 15th sess., ch. 146, sec. 6/p. 208)
05 May 1866
MILLARD (Utah) lost to the state of Nevada when Nevada gained from Utah Territory; MILLARD eliminated from Nevada. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158-159)

MINERAL

10 Feb 1911
MINERAL created from ESMERALDA. (Nev. Stats. 1911, 25th sess., ch. 13/pp. 10-15)
28 Mar 1933
MINERAL lost to LYON. (Nev. Stats. 1933, 36th sess., ch. 193/pp. 335-339; Nev. Stats. 1935, 37th sess., ch. 166/p. 361)

MOHAVE (Ariz.)

10 Nov 1864
MOHAVE (Ariz.) created by Arizona Territory. MOHAVE included part of present Nevada. (Howell Code, Ariz. Terr. Laws 1864, 1st assy., ch. 2/ pp. 24-25)
22 Dec 1865
MOHAVE (Ariz.) lost to creation of PAH-UTE (Arizona Territory, extinct). (Ariz. Terr. Laws 1865, 2d assy./pp. 19-20)
05 May 1866
MOHAVE (Ariz.) lost to the state of Nevada when Nevada gained from Arizona Territory. Arizona Territory twice petitioned Congress to repeal the act and did not recognize the change until 18 February 1871. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Sacks, 25; Van Zandt, 158, 165)

Nevada Territory

02 Mar 1861
The United States created Nevada Territory from Utah Territory; map depicts non-county area in Nevada Territory. (U.S. Stat., vol. 12, ch. 83[1861], pp. 209-210; Van Zandt, 158-160)
25 Nov 1861
Nevada Territory created CHURCHILL, DOUGLAS, ESMERALDA, HUMBOLDT, LAKE (extinct), LYON, ORMSBY (extinct), STOREY, and WASHOE from non-county area; all non-county area in Nevada Territory was eliminated. (Nev. Terr. Stats. 1861, 1st sess., ch. 24/pp. 50-52)

New Mexico Territory

13 Dec 1850
The United States created New Mexico Territory from unorganized federal territory (land ceded by Mexico to the United States in the Treaty of Guadalupe-Hidalgo, 1848), and from territory purchased this date by the United States from the state of Texas. New Mexico Territory included all of present New Mexico, most of present Arizona, and parts of present Colorado and Nevada. Map depicts non-county area of New Mexico Territory in present Nevada. (U.S. Stat., vol. 9, ch. 49[1850]/pp. 446-452; Baldwin, 117-137; Van Zandt, 162-165)
09 Jan 1852
Non-county area in New Mexico Territory lost to BERNALILLO (New Mex.), RIO ARRIBA (New Mex.), SANTA ANA (New Mex. Territory, extinct), TAOS (New Mex.), and VALENCIA (New Mex.); eliminated all non-county area of New Mexico Territory in present Nevada. (N.M. Terr. Laws 1851, 1st assy., 2d sess./pp. 291-292)

Non-County Area

14 Jul 1862
Non-County Area created when Nevada Territory gained from Utah Territory. (U.S. Stat., vol. 12, p. 575; Van Zandt, 158-160)
19 Dec 1862
Non-County Area lost to creation of LANDER. (Nev. Terr. Stats. 1862, 2d sess., ch. 58/p. 53)
16 Feb 1864
Non-County Area lost to creation of NYE; Non-County Area eliminated. (Nev. Terr. Stats. 1864, 3d sess., ch. 102/p. 143)

NYE

16 Feb 1864
NYE created by Nevada Territory from ESMERALDA and Non-County Area. (Nev. Terr. Stats. 1864, 3d sess., ch. 102/p. 143)
31 Oct 1864
NYE became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
09 Mar 1865
NYE gained from CHURCHILL, ESMERALDA, and LANDER. (Nev. Stats. 1865, 1st sess., ch. 106/p. 352)
26 Feb 1866
NYE lost to creation of LINCOLN. (Nev. Stats. 1866, 2d sess., ch. 48/p. 131)
05 May 1866
NYE gained from BEAVER (Utah), IRON (Utah), MILLARD (Utah), and PAH-UTE (Arizona Territory, extinct) when the state of Nevada gained from Arizona Territory and Utah Territory. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158, 165; Nev. Stats. 1866, 2d sess., ch. 84/p. 183)
18 Mar 1867
NYE exchanged with LINCOLN. (Nev. Stats. 1867, 3d sess., ch. 90/p. 129)
05 Mar 1869
NYE exchanged with ESMERALDA. (Nev. Stats. 1869, 4th sess., ch. 75/p. 128)
20 Feb 1875
NYE lost to LINCOLN. (Nev. Stats. 1875, 7th sess., ch. 36/pp. 80-81)
26 Feb 1875
NYE lost to ESMERALDA and WHITE PINE. (Nev. Stats. 1875, 7th sess., chs. 50, 52/pp. 102-105)
24 Mar 1913
NYE gained small area in the city of Tonopah from ESMERALDA. (Nev. Stats. 1913, 26th sess., ch. 221/p. 312)
07 Jun 1985
Boundary between NYE and CLARK was adjusted and placed on public land survey lines [change too small to map]. (Nev. Stats. 1985, 63rd sess., ch. 551, p. 1654-1655)
29 Jun 1987
NYE lost to creation of BULLFROG (extinct). This creation was an effort by Nevada to discourage construction of the Yucca Mountain nuclear waste disposal site. (Nev. Stats. 1987, 64th sess., ch. 819/pp. 2304-2305; Coates, "Nevada Scam")
03 May 1989
NYE gained all of BULLFROG; BULLFROG eliminated following a Nevada District Court ruling that the creation was unconstitutional. (Nev. Stats. 1989, 65th sess., ch. 104/pp. 241-246)

ORMSBY (extinct)

25 Nov 1861
ORMSBY (extinct) created by Nevada Territory from non-county area. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 3/p. 51)
31 Oct 1864
ORMSBY (extinct) became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
19 Mar 1897
Legislature authorized a referendum on the question: "Shall STOREY, ORMSBY, LYON, and DOUGLAS be consolidated into one county?" Referendum was defeated at the 1898 general election by all counties except ORMSBY (extinct), and the consolidation did not take effect. (Nev. Stats. 1897, 18th sess., ch. 94/p. 110; Mottaz, 43)
02 Mar 1965
ORMSBY (extinct) exchanged with DOUGLAS. (Nev. Stats. 1965, 53d sess., ch. 94/pp. 130-131)
04 Apr 1967
ORMSBY (extinct) exchanged with WASHOE when boundary was placed on public land survey lines. (Nev. Stats. 1967, 54th sess., ch. 243/pp. 722-724)
01 Jul 1969
ORMSBY was absorbed into the independent city of Carson City; ORMSBY eliminated. Act passed 1 April 1969; took effect 1 July 1969. (Nev. Stats. 1969, 55th sess., ch. 213/pp. 287-289; Nevada Constitution, art. 4, sec. 37[A])

PAH-UTE (Ariz. Terr., extinct)

22 Dec 1865
PAH-UTE (Arizona Territory, extinct) created by Arizona Territory from MOHAVE (Ariz.). PAH-UTE included part of present Nevada. (Ariz. Terr. Laws 1865, 2d assy./pp. 19-20)
05 May 1866
PAH-UTE (Arizona Territory, extinct) lost to the state of Nevada when Nevada gained from Arizona Territory. Arizona Territory twice petitioned Congress to repeal the act and did not recognize the change until 18 February 1871. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Sacks, 25; Van Zandt, 158, 165)

PAUTAH (Calif., proposed)

03 May 1852
California legislature proposed creation of PAUTAH (Calif.) in Utah Territory. PAUTAH would have been located entirely within present Nevada. Creation never took effect because the United States never ceded the area to California. (Calif. Stats. 1852, 3d sess., ch. 118/p. 193; "Historical and Political Data, Carson County, Utah Territory," Political History of Nevada 1996, http://dmla.clan.lib.nv.us/docs/nsla/archives/political/historical/hist05.htm, 12 December 2002)
08 Apr 1859
PAUTAH (Calif.) legally eliminated, ending the attempt by California to gain part of Utah Territory in present Nevada. (Calif. Stats. 1859, 10th sess., ch. 183/p. 186)

PERSHING

18 Mar 1919
PERSHING created from HUMBOLDT. (Nev. Stats. 1919, 29th sess., ch. 62/pp. 75-76)
19 May 1924
PERSHING exchanged with WASHOE when WASHOE Board of County Commissioners unilaterally changed its eastern boundary to run on public land survey lines. HUMBOLDT, PERSHING, and the state of Nevada acquiesced to this change. WASHOE County Clerk's office was unable to locate this change in board minutes, 1923-1927. (Mottaz, 46; Washoe Board of County Commissioners Minutes, 19 May 1924; Washoe Co. Clerk, email to P. T. Sinko, 26 Sep. 2006)
12 May 1983
PERSHING boundaries were redefined [no change]. (Nev. Stats. 1983, 62d sess., ch. 250, sec. 2/pp. 565-566)

RIO ARRIBA (New Mex.)

09 Jan 1852
RIO ARRIBA (New Mex.) boundaries redefined by New Mexico Territory. RIO ARRIBA gained from SAN MIGUEL (New Mex.), SANTA ANA (New Mex. Territory, extinct), SANTA FE (New Mex.), and non-county area in New Mexico Territory; exchanged with TAOS (New Mex.). RIO ARRIBA included parts of present Nevada, New Mexico, and Arizona. (N.M. Terr. Laws 1851, 1st assy., 2d sess./p. 292)
24 Feb 1863
RIO ARRIBA (New Mexico) lost to creation of Arizona Territory; RIO ARRIBA eliminated from present Nevada. (U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165)

ROOP (extinct)

25 Nov 1861
LAKE (later ROOP, extinct) created by Nevada Territory from non-county area. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 7/p. 52)
05 Dec 1862
LAKE (extinct) renamed ROOP (extinct). (Nev. Terr. Stats. 1862, 2d sess., ch. 5/p. 6)
18 Feb 1864
ROOP (extinct) was disorganized and attached to WASHOE "for judicial, legislative and revenue purposes." (Nev. Terr. Stats. 1864, 3d sess., ch. 127/p. 159)
31 Oct 1864
ROOP (extinct) became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
18 Jan 1883
ROOP (extinct) lost all territory to WASHOE; ROOP eliminated. (Nev. Stats. 1883, 11th sess., ch. 4/p. 12)

ST. MARY'S (Utah Terr., extinct)

05 Jan 1856
ST. MARY'S (Utah Territory, extinct) created by Utah Territory from DESERT (Utah Territory, extinct), JUAB (Utah), TOOELE (Utah), and WEBER (Utah). ST MARY'S was located entirely in present Nevada. ST. MARY'S not fully organized, attached to TOOELE "for election, revenue, and judicial purposes." (Utah Terr. Laws 1855, 5th sess., sec. 3/p. 6 and p. 8)
17 Jan 1859
ST. MARY'S (Utah Territory, extinct) detached from TOOELE (Utah), attached to CARSON (Utah Territory, extinct) "for election, revenue and judicial purposes." (Utah Terr. Laws 1858, 8th sess., ch. 11/pp. 19-20)
18 Jan 1861
ST. MARY'S (Utah Territory, extinct) gained from BEAVER (Utah), IRON (Utah), MILLARD (Utah), and WASHINGTON (Utah); lost to DESERT (Utah Territory, extinct), GREASEWOOD (Utah Territory, extinct), JUAB (Utah), SHAMBIP (Utah Territory, extinct), and TOOELE (Utah). ST. MARY'S remained attached to CARSON (Utah Territory, extinct). (Utah Terr. Laws 1861, 10th sess., p. 19)
02 Mar 1861
The United States created Nevada Territory from Utah Territory; CARSON (Utah Territory) eliminated, ending attachment of ST. MARY'S (Utah Territory, extinct) to CARSON. (U.S. Stat., vol. 12, ch. 83[1861], pp. 209-210; Van Zandt, 158-160)
17 Jan 1862
ST. MARY'S (Utah Territory) lost all territory to BEAVER (Utah), BOX ELDER (Utah), IRON (Utah), MILLARD (Utah), TOOELE (Utah), and WASHINGTON (Utah); ST. MARY'S eliminated. (Utah Terr. Laws 1861, 11th sess., secs. 1-4, 12-13/pp. 46-49)

SAN JUAN (New Mex. Terr., original, extinct)

12 Jan 1861
SAN JUAN (New Mexico Territory, original, extinct) created by New Mexico Territory from TAOS (New Mexico); SAN JUAN included parts of present Nevada, Arizona, and New Mexico. (N.M. Terr. Laws 1860-1861, 10th assy. /p. 16)
18 Jan 1862
SAN JUAN (New Mexico Territory, original, extinct) lost all territory to TAOS (New Mex.) when the law creating SAN JUAN was repealed; SAN JUAN eliminated. (N.M. Terr. Laws 1861-1862, 11th assy. /p. 16)

SANTA ANA (New Mex. Terr., extinct)

09 Jan 1852
SANTA ANA (New Mexico Territory, extinct) boundaries redefined by New Mexico Territory. SANTA ANA gained from BERNALILLO (New Mex.) and non-county area in New Mexico Territory; exchanged with SANTA FE (New Mex.); lost to RIO ARRIBA (New Mex.). SANTA ANA included parts of present Nevada, New Mexico, and Arizona. (N.M. Terr. Laws 1851, 1st assy., 2d sess./p. 292)
24 Feb 1863
SANTA ANA (New Mexico Territory, extinct) lost to creation of Arizona Territory; SANTA ANA eliminated from present Nevada. (U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165)

SHAMBIP (Utah Terr., extinct)

18 Jan 1861
SHAMBIP (Utah Territory, extinct) gained from ST. MARY'S (Utah Territory, extinct); SHAMBIP included territory in present Utah and Nevada. (Utah Terr. Laws 1861, 10th sess., p. 19)
17 Jan 1862
SHAMBIP (Utah Territory) lost all territory to TOOELE (Utah) and a small area to JUAB (Utah); SHAMBIP eliminated. (Utah Terr. Laws 1861, 11th sess., secs. 6, 13/pp. 47-49)

STOREY

25 Nov 1861
STOREY created by Nevada Territory from non-county area. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 6/p. 52)
31 Oct 1864
STOREY became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
15 Mar 1895
STOREY boundaries were redefined [no change]. (Nev. Stats. 1895, 17th sess., ch. 80/p. 73)
19 Mar 1897
Legislature authorized a referendum on the question: "Shall STOREY, ORMSBY, LYON, and DOUGLAS be consolidated into one county?" Referendum was defeated at the 1898 general election by all counties except ORMSBY (extinct), and the consolidation did not take effect. (Nev. Stats. 1897, 18th sess., ch. 94/p. 110; Mottaz, 43)
06 Mar 1899
LYON boundaries were redefined to include the "territory over which LYON has exercised jurisdiction for the period of five years last past." LYON boundary with STOREY was in dispute [see July 1911]. (Nev. Stats. 1899, 19th sess., ch. 30/p. 41; Mottaz, 43)
Jul 1911
During the July 1911 term, the Nevada Supreme Court found in favor of LYON regarding the correct location of its boundary with STOREY [no change]. ("Lyon v. Storey" in Nev. Rpts., 34: 243-264)
01 Apr 1963
STOREY boundary along Truckee River was clarified [not mapped]. (Nev. Stats. 1963, 52d sess., ch. 169/p. 269)
21 Apr 1973
STOREY exchanged with WASHOE. (Nev. Stats. 1973, 57th sess., ch. 472, p. 697-699)

TAOS (New Mex.)

09 Jan 1852
TAOS (New Mexico) boundaries redefined by New Mexico Territory. TAOS gained from non-county area in New Mexico Territory, exchanged with RIO ARRIBA (New Mex.) and SAN MIGUEL (New. Mex.). TAOS included parts of present Nevada, New Mexico, Arizona, and Colorado. (N.M. Terr. Laws 1851, 1st assy., 2d sess./p. 291)
01 Feb 1860
TAOS (New Mexico) lost to creation of MORA (New Mexico); area within present Nevada was unchanged. (N.M. Terr. Laws 1859-1860, 9th assy./p. 76)
12 Jan 1861
TAOS (New Mexico) lost to creation of SAN JUAN (New Mexico Territory, original, extinct). (N.M. Terr. Laws 1860-1861, 10th assy. /p. 16)
28 Feb 1861
TAOS (New Mexico) lost to creation of Colorado Territory; area within present Nevada was unchanged. (U.S. Stat., vol. 12, ch. 59[1861]/pp. 172-177; Van Zandt, 141-144)
18 Jan 1862
TAOS (New Mexico) gained all of SAN JUAN (New Mexico Territory, original, extinct) when the law creating SAN JUAN was repealed. (N.M. Terr. Laws 1861-1862, 11th assy. /p. 16)
24 Feb 1863
TAOS (New Mexico) lost to creation of Arizona Territory; TAOS eliminated from present Nevada. (U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165)

TOOELE (Utah)

03 Mar 1852
TOOELE (Utah) boundaries were redefined by Utah Territory. TOOELE gained non-county area, lost to DESERT (Utah Territory, extinct), GREAT SALT LAKE (now SALT LAKE, Utah), and UTAH (Utah); TOOELE included parts of present Utah and Nevada. (Utah Terr. Acts 1851, 1st sess., sec. 8/p. 163)
17 Jan 1854
TOOELE (Utah) lost to creation of CARSON (Utah Territory, extinct). (Utah Terr. Laws 1853, 3rd sess., p. 19)
05 Jan 1856
TOOELE (Utah) lost to creation of HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct); TOOELE eliminated from present Nevada. HUMBOLDT and ST. MARY'S not fully organized, both attached to TOOELE "for election, revenue, and judicial purposes." (Utah Terr. Laws 1855, 5th sess., secs. 2-3/pp. 5-6 and p. 8)
18 Jan 1861
TOOELE (Utah) gained from ST. MARY'S (Utah Territory, extinct); TOOELE included territory in present Utah and Nevada. (Utah Terr. Laws 1861, 10th sess., p. 19)
17 Jan 1862
TOOELE (Utah) gained from CEDAR (Utah Territory, extinct), DESERT (Utah Territory, extinct), GREAT SALT LAKE (now SALT LAKE, Utah), JUAB (Utah), SHAMBIP (Utah Territory, extinct), and ST. MARY'S (Utah Territory, extinct); lost to BOX ELDER (Utah). (Utah Terr. Laws 1861, 11th sess., sec. 13/p. 49)
14 Jul 1862
TOOELE (Utah) lost to Nevada Territory in present Nevada when Nevada Territory gained from Utah Territory. (U.S. Stat., vol. 12, ch. 173 [1862], p. 575; Van Zandt, 158-160)
05 May 1866
TOOELE (Utah) lost to the state of Nevada when Nevada gained from Utah Territory; TOOELE eliminated from Nevada. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158-159)

Unorganized Federal Territory

09 Sep 1850
That part of present Nevada south of 37 degrees north latitude was unorganized federal territory (ceded by Mexico in the 1848 Treaty of Guadalupe-Hidalgo). (Parry, 102: 29-59; U.S. Stat., vol. 9[1848]/pp. 922-943)
13 Dec 1850
All unorganized federal territory in present Nevada became part of New Mexico Territory. (U.S. Stat., vol. 9, ch. 49[1850]/pp. 446-452; Baldwin, 117-137; Van Zandt, 28-29, 162-165)

Utah Territory

09 Sep 1850
The United States created Utah Territory from territory ceded by Mexico in the Treaty of Guadalupe-Hidalgo (1848), from territory to be purchased from the state of Texas in December 1850, and from unorganized federal territory. Map depicts non-county area of Utah Territory in present Nevada. (U.S. Stat., vol. 9, ch. 51[1850]/pp. 453-458; Van Zandt, 159)
03 Mar 1852
Utah Territory lost all non-county area in present Nevada to IRON (Utah), MILLARD (Utah), and WEBER (Utah); and lost to creation of DESERT (Utah Territory, extinct), JUAB (Utah), and WASHINGTON (Utah). (Utah Terr. Laws 1851, 1st sess., pp. 162-164)

VALENCIA (New Mex.)

09 Jan 1852
VALENCIA (New Mex.) boundaries redefined by New Mexico Territory. VALENCIA gained from non-county area in New Mexico Territory, lost to creation of SOCORRO (New Mex.), and lost to BERNALILLO (New Mex.). VALENCIA included parts of present Nevada, New Mexico, and Arizona. (N.M. Terr. Laws 1851, 1st assy., 2d sess./p. 292)
24 Feb 1863
VALENCIA (New Mexico) lost to creation of Arizona Territory; VALENCIA eliminated from present Nevada. (U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165)

WASHINGTON (Utah)

03 Mar 1852
WASHINGTON (Utah) created by Utah Territory from non-county area and IRON (Utah); included parts of present Utah, Colorado, and Nevada. WASHINGTON (Utah) not fully organized, attached to IRON (Utah) "for election, revenue, and judicial purposes." (Utah Terr. Laws 1851, 1st sess., sec. 13/p. 164)
05 Jan 1856
WASHINGTON (Utah) gained from IRON (Utah) all along its northern line when the boundary was shifted slightly from 30 degrees, 30 minutes north latitude to four miles north of Fort Harmony. (Utah Terr. Laws 1855, 5th sess., sec. 10/p. 7)
23 Feb 1856
WASHINGTON (Utah) fully organized, detached from IRON (Utah). (Larson, 26)
18 Jan 1861
WASHINGTON (Utah) lost to HUMBOLDT (Utah Territory, extinct) and ST. MARY'S (Utah Territory, extinct). (Utah Terr. Laws 1861, 10th sess., p. 19)
28 Feb 1861
The United States created Colorado Territory from Nebraska, New Mexico, and Utah Territories, and from the former Kansas Territory. WASHINGTON (Utah) lost to Colorado Territory and was eliminated from present Colorado; area within present Nevada was unchanged. (U.S. Stat., vol. 12, ch. 59[1861]/pp. 172-177; Van Zandt, 141)
17 Jan 1862
WASHINGTON (Utah) gained from ST. MARY'S (Utah Territory, extinct), lost to IRON (Utah). (Utah Terr. Laws 1861, 11th sess., sec. 1/p. 46)
14 Jul 1862
WASHINGTON (Utah) lost to Nevada Territory in present Nevada when Nevada Territory gained from Utah Territory. (U.S. Stat., vol. 12, ch. 173 [1862], p. 575; Van Zandt, 158-160)
16 Jan 1864
WASHINGTON (Utah) lost to creation of KANE (Utah); area within present Nevada was unchanged. (Utah Terr. Laws 1863, 13th sess., pp. 18-19)
10 Jan 1866
WASHINGTON (Utah) gained from IRON (Utah); area within present Nevada was unchanged. (Utah Terr. Laws 1865, 15th sess., ch. 146, sec. 3/p. 207)
05 May 1866
WASHINGTON (Utah) lost to the state of Nevada when Nevada gained from Utah Territory; WASHINGTON eliminated from Nevada. (U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158-159)

WASHOE

25 Nov 1861
WASHOE created by Nevada Territory from non-county area. (Nev. Terr. Stats. 1861, 1st sess., ch. 24, sec. 4/p. 51)
18 Feb 1864
ROOP (extinct) was disorganized and attached to WASHOE "for judicial, legislative and revenue purposes." (Nev. Terr. Stats. 1864, 3d sess., ch. 127/p. 159)
31 Oct 1864
WASHOE became a county in the state of Nevada. (U.S. Stat., vol. 13, ch. 36[1864]/pp. 30-32 and proc. 22/p. 749; Van Zandt, 158-160)
18 Jan 1883
WASHOE gained all of ROOP (extinct); ROOP eliminated. (Nev. Stats. 1883, 11th sess., ch. 4/p. 12)
19 May 1924
WASHOE exchanged with HUMBOLDT and PERSHING when WASHOE Board of County Commissioners unilaterally changed its eastern boundary north of 40 degrees north latitude to run on public land survey lines. HUMBOLDT, PERSHING, and the state of Nevada acquiesced to this change. WASHOE County Clerk's office was unable to locate this change in board minutes, 1923-1927. (Mottaz, 46; Washoe Board of County Commissioners Minutes, 19 May 1924; Washoe Co. Clerk, email to P. T. Sinko, 26 Sep. 2006)
25 Mar 1965
WASHOE exchanged with LYON when boundary was placed on public land survey lines. (Nev. Stats. 1965, 53d sess., ch. 192/pp. 337-338)
04 Apr 1967
WASHOE exchanged with ORMSBY (extinct) when boundary was placed on public land survey lines. (Nev. Stats. 1967, 54th sess., ch. 243/pp. 722-724)
01 Jul 1969
WASHOE boundaries were redefined [no change]. (Nev. Stats. 1969, 55th sess., ch. 213/pp. 320-32)
16 Feb 1973
WASHOE boundaries were redefined [no change]. (Nev. Stats. 1973, 57th sess., ch. 31/p. 31)
21 Apr 1973
WASHOE exchanged with STOREY. (Nev. Stats. 1973, 57th sess., ch. 472/pp. 697-699)
23 Apr 1977
WASHOE exchanged with Carson City (Ind. City) when boundary was adjusted along U.S. Highway 395 near Lakeview. (Nev. Stats. 1977, 59th sess., ch. 246/pp. 446-448)
12 May 1983
WASHOE exchanged with CHURCHILL when boundary was placed on public land survey lines. (Nev. Stats. 1983, 62nd sess., ch. 250/pp. 565-569)

WEBER (Utah)

03 Mar 1852
WEBER (Utah) boundaries redefined by Utah Territory. WEBER (Utah) gained from DAVIS (Utah) and non-county area; WEBER included parts of present Utah and Nevada. DESERT (Utah Territory, extinct) not fully organized, attached to WEBER "for election, revenue, and judicial purposes." (Utah Terr. Laws 1851, 1st sess., secs. 1, 3/p. 162)
10 Jan 1855
WEBER (Utah) lost to DAVIS (Utah); area within present Nevada was unchanged. (Utah Terr. Laws 1854, 4th sess., ch. 85/pp. 279-280)
05 Jan 1856
WEBER (Utah) lost to CARSON (Utah Territory, extinct), and lost to creation of BOX ELDER (Utah), CACHE (Utah), GREASEWOOD (Utah Territory, extinct), HUMBOLDT (Utah Territory, extinct), MALAD (Utah Territory, extinct), and ST. MARY'S (Utah Territory, extinct); WEBER eliminated from present Nevada. (Utah Terr. Laws 1855, 5th sess., pp. 5-7)

WHITE PINE

01 Apr 1869
WHITE PINE created from LANDER. (Nev. Stats. 1869, 4th sess., ch. 60/pp. 108-110)
26 Feb 1875
WHITE PINE gained from NYE. (Nev. Stats. 1875, 7th sess. ch. 52/pp. 103-105)
02 Mar 1881
WHITE PINE lost to EUREKA. (Nev. Stats. 1881, 10th sess., ch. 70/p. 104)
18 Mar 1925
Boundary between WHITE PINE and ELKO was adjusted to run on public land survey lines [no mappable change]. (Nev. Stats. 1925, 32d sess., ch. 113/p. 149)