|Hardeman County, Texas|
The Hardeman County Courthouse in Quanah
Location in the U.S. state of Texas
Texas's location in the U.S.
|• Total||697 sq mi (1,805 km2)|
|• Land||695 sq mi (1,800 km2)|
|• Water||1.8 sq mi (5 km2), 0.3%|
|• ( 2010)||4,139|
|• Density||6.0/sq mi (2.3/km2)|
|Time zone||Central: UTC−6/ −5|
Hardeman County ( // HAR-di-mən) is a county located in the U.S. state of Texas. As of the 2010 census, its population was 4,139.  The county seat and largest city is Quanah.  The county was created in 1858 and later organized in 1884.  It is named for two brothers, Bailey Hardeman and Thomas Jones Hardeman,  early Texas politicians and legislators. Hardeman County was one of 46 prohibition or entirely dry counties in the state of Texas until November 2006, when voters approved referendums to permit the legal sale of alcoholic beverages for on- and off-premises consumption.
The Prairie Dog Town Fork Red River joins with Buck Creek in the northwestern corner of the county to form the Red River, which flows east to form the northern border of the county, separating it from Oklahoma. 
Hardeman County is the northernmost county in Texas that is not part of the Texas Panhandle.
- Harmon County, Oklahoma (north)
- Jackson County, Oklahoma (northeast)
- Wilbarger County (east)
- Foard County (south)
- Cottle County (southwest)
- Childress County (west)
|U.S. Decennial Census
1850–2010  2010–2014 
As of the census  of 2000, there were 4,724 people, 1,943 households, and 1,319 families residing in the county. The population density was 7 people per square mile (3/km²). There were 2,358 housing units at an average density of 3 per square mile (1/km²). The racial makeup of the county was 85.41% White, 4.83% Black or African American, 0.76% Native American, 0.30% Asian, 7.09% from other races, and 1.61% from two or more races. 14.50% of the population were Hispanic or Latino of any race.
There were 1,943 households out of which 29.90% had children under the age of 18 living with them, 54.70% were married couples living together, 10.40% had a female householder with no husband present, and 32.10% were non-families. 29.50% of all households were made up of individuals and 18.00% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.97.
In the county, the population was spread out with 25.40% under the age of 18, 7.50% from 18 to 24, 22.60% from 25 to 44, 24.30% from 45 to 64, and 20.20% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 89.40 males. For every 100 females age 18 and over, there were 85.20 males.
The median income for a household in the county was $28,312, and the median income for a family was $33,325. Males had a median income of $26,683 versus $18,566 for females. The per capita income for the county was $16,824. About 14.60% of families and 17.80% of the population were below the poverty line, including 26.00% of those under age 18 and 13.40% of those age 65 or over.
Georgia-Pacific operates a gypsum plant in the small community of Acme, located 6 miles (9.7 km) west of Quanah on U.S. Highway 287.
- Copper Breaks State Park, which is operated by the Texas Parks & Wildlife Department, is located in far southern Hardeman County near the Pease River just off State Highway 6, about 12 miles (19 km) south of Quanah. The park features a portion of the state Texas longhorn herd.
- Lake Pauline is located off U.S. Highway 287, 6 miles (9.7 km) east of Quanah.
Hardeman County formerly leaned Democratic, however in recent years it has swung to become solidly Republican.
- Dry counties
- List of museums in North Texas
- National Register of Historic Places listings in Hardeman County, Texas
- Recorded Texas Historic Landmarks in Hardeman County
- Bailey Hardeman
- Hardeman County, Tennessee
- "State & County QuickFacts". United States Census Bureau. Archived from the original on July 11, 2011. Retrieved December 17, 2013.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- "Texas: Individual County Chronologies". Texas Atlas of Historical County Boundaries. The Newberry Library. 2008. Retrieved May 24, 2015.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 149.
- "State Rep. Springer announces district tour July 30". Lubbock Avalanche-Journal, July 16, 2013. Retrieved July 18, 2013.
- "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved April 28, 2015.
"Secondary Streams of Texas". Texas Almanac. Texas State Historical Association. Retrieved 2015-05-05.
Red River, Prairie Dog Town Fork
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Retrieved April 28, 2015.
- "Texas Almanac: Population History of Counties from 1850–2010" (PDF). Texas Almanac. Retrieved April 28, 2015.
- "American FactFinder". United States Census Bureau. Retrieved 2011-05-14.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-07-25.
|Wikimedia Commons has media related to Hardeman County, Texas.|
- Texas Cooperative Extension, Hardeman County office
- Texas School Districts: School Districts in Hardeman County
- Hardeman County from the Handbook of Texas Online
- Hardeman County profile from the Texas Association of Counties
- Historic Hardeman County materials, hosted by the Portal to Texas History.
- Thomas Jones Hardeman at Find a Grave
- Bailey Hardeman at Find a Grave