|Sweetwater County, Wyoming|
Location in the U.S. state of Wyoming
Wyoming's location in the U.S.
ROCK SPRINGS WYOMING MICROPOLITAN AREA Latitude and Longitude:
|Named for||Sweetwater River|
|Largest city||Rock Springs|
|• Total||10,491 sq mi (27,172 km2)|
|• Land||10,427 sq mi (27,006 km2)|
|• Water||64 sq mi (166 km2), 0.6%|
|• ( 2016)||44,165|
|• Density||4.2/sq mi (1.6/km2)|
|ZIP Code(s)||82301, 82322, 82336, 82901, 82929, 82932, 82934, 82935, 83938 82942, 82843, & 82945 |
|Time zone||Mountain: UTC−7/ −6|
Sweetwater County is a county located in southwestern Wyoming, United States.  As of the 2010 census, the population was 43,806.  Its county seat is Green River.  By area, it is the largest county in Wyoming. It is in the southwestern part of Wyoming, north of the Colorado- Utah state line.
Sweetwater County comprises the Rock Springs, Green River, Wyoming Micropolitan Statistical Area.
- 1 History
- 2 Geography
- 3 Demographics
- 4 Politics and Government
- 5 Communities
- 6 Media
- 7 See also
- 8 References
- 9 Further reading
- 10 External links
Sweetwater County was originally created on December 17, 1867 as a county within the Dakota Territory.  The county was derived from land that was previously part of Laramie County. The county was originally named Carter County for Judge W.A. Carter of Fort Bridger  In 1869, the newly established legislature of the Wyoming Territory renamed the county for the Sweetwater River.
Also in 1869, Uinta County was organized with land ceded by Sweetwater County. Johnson County, originally named Pease County, was formed from parts of Sweetwater County and Carbon County in 1875. In 1884, Sweetwater County lost territory when Fremont County was created. Sweetwater County also lost territory when Carbon County was formed in 1886. At that point, the county achieved its present boundaries except for minor adjustments in 1909, 1911, and 1951.
According to the U.S. Census Bureau, the county has a total area of 10,491 square miles (27,170 km2), of which 10,427 square miles (27,010 km2) is land and 64 square miles (170 km2) (0.6%) is water.  The largest county in Wyoming, Sweetwater County is larger than six states and is the eighth-largest county in the United States (not including boroughs and census areas in Alaska). Most of the Great Divide Basin lies within the county, comprising the county's northeast quadrant.
- Ashley National Forest (part)
- Flaming Gorge National Recreation Area (part)
- Seedskadee National Wildlife Refuge
|U.S. Decennial Census
1870–2000  2010–2016 
As of the census  of 2000, there were 37,613 people, 14,105 households, and 10,099 families residing in the county. The population density was 4 people per square mile (1/km²). There were 15,921 housing units at an average density of 2 per square mile (1/km²). The racial makeup of the county was 91.62% White, 0.73% Black or African American, 1.01% Native American, 0.64% Asian, 0.04% Pacific Islander, 3.59% from other races, and 2.37% from two or more races. 9.42% of the population were Hispanic or Latino of any race. 16.4% are of English, 16.2% German, 9% Irish and 5% Italian ancestry. 
There were 14,105 households out of which 38.20% had children under the age of 18 living with them, 57.80% were married couples living together, 9.20% had a female householder with no husband present, and 28.40% were non-families. 23.60% of all households were made up of individuals and 6.90% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.11.
In the county, the population was spread out with 28.90% under the age of 18, 10.10% from 18 to 24, 29.30% from 25 to 44, 23.70% from 45 to 64, and 8.00% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 102.40 males. For every 100 females age 18 and over, there were 101.10 males.
The median income for a household in the county was $46,537, and the median income for a family was $54,173. Males had a median income of $45,678 versus $22,440 for females. The per capita income for the county was $19,575. About 5.40% of families and 7.80% of the population were below the poverty line, including 9.20% of those under age 18 and 7.00% of those age 65 or over.
As of the 2010 United States Census, there were 43,806 people, 16,475 households, and 11,405 families residing in the county.  The population density was 4.2 inhabitants per square mile (1.6/km2). There were 18,735 housing units at an average density of 1.8 per square mile (0.69/km2).  The racial makeup of the county was 88.5% white, 1.0% American Indian, 1.0% black or African American, 0.8% Asian, 0.1% Pacific islander, 6.4% from other races, and 2.3% from two or more races. Those of Hispanic or Latino origin made up 15.3% of the population.  In terms of ancestry, 22.4% were German, 19.0% were English, 13.0% were Irish, 7.4% were Italian, and 4.4% were American. 
Of the 16,475 households, 36.7% had children under the age of 18 living with them, 53.5% were married couples living together, 9.0% had a female householder with no husband present, 30.8% were non-families, and 24.0% of all households were made up of individuals. The average household size was 2.62 and the average family size was 3.09. The median age was 32.8 years. 
The median income for a household in the county was $69,828 and the median income for a family was $79,527. Males had a median income of $65,174 versus $31,738 for females. The per capita income for the county was $30,961. About 6.1% of families and 8.2% of the population were below the poverty line, including 12.0% of those under age 18 and 5.0% of those age 65 or over. 
Sweetwater County was a Democratic stronghold in Wyoming until recent years, voting Democratic in eleven consecutive presidential elections between 1928 and 1968, after supporting Progressive Robert La Follette senior in 1924. In 1928, 1952, 1956 and 1976 it was the only Wyoming county to support the Democratic Presidential nominee.
Nonetheless, no Democratic presidential candidate has won Sweetwater County since Bill Clinton in 1996. In 2016, Hillary Clinton won just 18.9 percent of the vote in the county.  At the state level, Sweetwater County is represented by three Democrats and three Republicans in the Wyoming House of Representatives, and two Democrats and one Republican in the Wyoming Senate.
|Reid O. West (Chairman)||Democratic||2011-|
|Don Van Matre||Republican||2010-|
Sweetwater County is served by two hyperlocal news websites, SweetwaterNOW.com and Wyo4news.com
- List of counties in Wyoming
- National Register of Historic Places listings in Sweetwater County, Wyoming
- "Sweetwater County, WY". unitedstateszipcodes.org. Retrieved 28 Jan 2018.
- U.S. Geological Survey Geographic Names Information System: Sweetwater County
- "State & County QuickFacts". United States Census Bureau. Retrieved 25 Jan 2014.
- "Find a County". National Association of Counties. Retrieved 7 Jun 2011.
- Long, John H. (2006). "Wyoming: Individual County Chronologies". Wyoming Atlas of Historical County Boundaries. The Newberry Library. Archived from the original on 2011-07-18. Retrieved 1 Sep 2011.
- Urbanek, Mae (1988). Wyoming Place Names. Missoula, Montana: Mountain Press Publishing Company. ISBN 0-87842-204-8.
- "2010 Census Gazetteer Files". United States Census Bureau. 22 Aug 2012. Retrieved 18 Aug 2015.
- "Population and Housing Unit Estimates". Retrieved 9 Jun 2017.
- "U.S. Decennial Census". United States Census Bureau. Retrieved 18 Aug 2015.
- "Historical Decennial Census Population for Wyoming Counties, Cities, and Towns". Wyoming Department of Administration & Information, Division of Economic Analysis. Retrieved 25 Jan 2014.
- "American FactFinder". United States Census Bureau. Retrieved 14 May 2011.
- "Sweetwater County, WY - Sweetwater County, Wyoming - Ancestry & family history". Epodunk.com. Retrieved 9 Jan 2018.
- "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Retrieved 12 Jan 2016.
- "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Retrieved 12 Jan 2016.
- "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 12 Jan 2016.
- "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 12 Jan 2016.
- Dave Leip’s U.S. Election Atlas; 2016 Presidential General Election Results – Sweetwater County, WY (and earlier years)
- Gardner, A. Dudley. "You Could Still Live Off the Land: Sweetwater County During the Great Depression." Annals of Wyoming (2011) 83#1, pp 2-20.
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