List of counties in Wyoming Information & List of counties in Wyoming Links at HealthHaven.com

This is a list of counties in Wyoming. There are 23 counties in the U.S. state of Wyoming. There were originally five counties in the Wyoming Territory: Laramie and Carter, established in 1867; Carbon and Albany established in 1868; and Uinta, an annexed portion of Utah and Idaho, extending from Montana (including Yellowstone Park) to the Wyoming-Utah boundary.^[1] On July 10, 1890, Wyoming was admitted to the Union with thirteen counties.^[1]

Three counties were renamed after their creation. Carter County was renamed Sweetwater County on December 1, 1869.^[2] Hanover County existed for seven days in 1911 before it was renamed Washakie County.^[3] Pease County, formed in 1875, was renamed Johnson County in 1879.^[3]

The Federal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify states and counties, is provided with each entry.^[4] Wyoming's code is 56, which when combined with any county code would be written as 56XXX. The FIPS code for each county links to census data for that county.^[5]

[edit] List

County	FIPS Code ^[5]	County Seat ^[6]	Created ^[1]	Formed from ^[1]	Etymology ^[7]	Population ^[6]^[8]	Area ^[6]^[8]	Map
Albany County	001	Laramie	1868	One of the original five counties.	City of Albany, New York.	&0000000000032014.00000032,014	&0000000000004274.0000004,274 sq mi (&0000000000011070.00000011,070 km²)
Big Horn County	003	Basin	1896	Parts of Sheridan County, Johnson County, and Fremont County.	Big Horn Mountains, a mountain range extending into northern Wyoming	&0000000000011461.00000011,461	&0000000000003137.0000003,137 sq mi (&0000000000008125.0000008,125 km²)
Campbell County	005	Gillette	1911	Parts of Weston County and Crook County.	John Allen Campbell (1835-1880), first governor of the Wyoming Territory (1869-1875)	&0000000000033698.00000033,698	&0000000000004797.0000004,797 sq mi (&0000000000012424.00000012,424 km²)
Carbon County	007	Rawlins	1868	One of the original five counties.	The vast coal beds in the county.	&0000000000015639.00000015,639	&0000000000007897.0000007,897 sq mi (&0000000000020453.00000020,453 km²)
Converse County	009	Douglas	1888	Parts of Albany County and Laramie County.	A.R. Converse, a banker and rancher from Cheyenne, Wyoming.	&0000000000012052.00000012,052	&0000000000004255.0000004,255 sq mi (&0000000000011020.00000011,020 km²)
Crook County	011	Sundance	1875	Parts of Laramie County and Albany County.	General George Crook (1820-1829), who served in the American Civil War and the Indian Wars.	&0000000000005887.0000005,887	&0000000000002859.0000002,859 sq mi (&0000000000007405.0000007,405 km²)
Fremont County	013	Lander	1884	Part of Sweetwater County.	John C. Frémont (1813-1890), explorer, U.S. Senator for California, and the first presidential candidate of a major party to run on a platform in opposition to slavery	&0000000000035804.00000035,804	&0000000000009183.0000009,183 sq mi (&0000000000023784.00000023,784 km²)
Goshen County	015	Torrington	1911	Part of Laramie County.	The Land of Goshen, a Biblical paradise.	&0000000000012538.00000012,538	&0000000000002225.0000002,225 sq mi (&0000000000005763.0000005,763 km²)
Hot Springs County	017	Thermopolis	1911	Parts of Fremont County, Big Horn County, and Park County.	The hot springs at Thermopolis within the county borders.	&0000000000004882.0000004,882	&0000000000002004.0000002,004 sq mi (&0000000000005190.0000005,190 km²)
Johnson County	019	Buffalo	1875	Parts of Carbon County and Sweetwater County.	E.P. Johnson, a lawyer from Cheyenne, Wyoming.	&0000000000007075.0000007,075	&0000000000004166.0000004,166 sq mi (&0000000000010790.00000010,790 km²)
Laramie County	021	Cheyenne	1867	One of the original five counties.	Jacques La Ramie (1785?–1821), a French-Canadian fur trapper.	&0000000000081607.00000081,607	&0000000000002686.0000002,686 sq mi (&0000000000006957.0000006,957 km²)
Lincoln County	023	Kemmerer	1911	Part of Uinta County.	Abraham Lincoln (1809-1865), U.S. President (1861-1865)	&0000000000014573.00000014,573	&0000000000004069.0000004,069 sq mi (&0000000000010539.00000010,539 km²)
Natrona County	025	Casper	1888	Part of Carbon County.	The natron, or soda deposits found within the county's borders. Natrona means natron in Spanish.	&0000000000066533.00000066,533	&0000000000005340.0000005,340 sq mi (&0000000000013831.00000013,831 km²)
Niobrara County	027	Lusk	1911	Part of Converse County.	The Niobrara River, which flows through the state. Niobrara is Omaha for flat or broad river.	&0000000000002407.0000002,407	&0000000000002626.0000002,626 sq mi (&0000000000006801.0000006,801 km²)
Park County	029	Cody	1909	Part of Big Horn County.	Yellowstone National Park, which includes most of the county.	&0000000000025786.00000025,786	&0000000000006943.0000006,943 sq mi (&0000000000017982.00000017,982 km²)
Platte County	031	Wheatland	1911	Part of Laramie County.	North Platte River. Plate is French for flat.	&0000000000008807.0000008,807	&0000000000002085.0000002,085 sq mi (&0000000000005400.0000005,400 km²)
Sheridan County	033	Sheridan	1888	Part of Johnson County.	Philip Sheridan, American Civil War general.	&0000000000026560.00000026,560	&0000000000002523.0000002,523 sq mi (&0000000000006535.0000006,535 km²)
Sublette County	035	Pinedale	1921	Parts of Fremont County and Lincoln County.	William Sublette, pioneer.	&0000000000005920.0000005,920	&0000000000004882.0000004,882 sq mi (&0000000000012644.00000012,644 km²)
Sweetwater County	037	Green River	1867	One of the original five counties.	Sweetwater River (a tributary of the North Platte River), which flows through the state.	&0000000000037613.00000037,613	&0000000000010426.00000010,426 sq mi (&0000000000027003.00000027,003 km²)
Teton County	039	Jackson	1921	Part of Lincoln County.	Teton Range, a small mountain range of the Rocky Mountains Wyoming-Idaho border	&0000000000018251.00000018,251	&0000000000004008.0000004,008 sq mi (&0000000000010381.00000010,381 km²)
Uinta County	041	Evanston	1869	One of the original five counties.	The Uintah Mountains, named in turn after the Uintah Native American people.	&0000000000019742.00000019,742	&0000000000002082.0000002,082 sq mi (&0000000000005392.0000005,392 km²)
Washakie County	043	Worland	1911	Part of Big Horn County	Washakie (1804-1900), a leader of Shoshone Native American tribe.	&0000000000008289.0000008,289	&0000000000002240.0000002,240 sq mi (&0000000000005802.0000005,802 km²)
Weston County	045	Newcastle	1890	Part of Crook County	John B. Weston, railroad promoter.	&0000000000006644.0000006,644	&0000000000002398.0000002,398 sq mi (&0000000000006211.0000006,211 km²)