|Delta County, Texas|
Delta County Courthouse in Cooper
Location in the U.S. state of Texas
Texas's location in the U.S.
|• Total||278 sq mi (720 km2)|
|• Land||257 sq mi (666 km2)|
|• Water||21 sq mi (54 km2), 7.6%|
|• ( 2016)||5,215|
|• Density||20/sq mi (8/km2)|
|Time zone||Central: UTC−6/ −5|
Delta County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 5,231. Going by a 2016 estimate, the population is 5,215.  Its county seat and largest city is Cooper.  The county was founded in 1870 and is named for its triangular shape,  much like the Greek letter delta.
Two forks of the Sulphur River form its northern and southern boundaries and meet at its easternmost point. Delta County was one of 19  prohibition, or entirely dry, counties in the state of Texas. As of 2015 [update], Delta county is no longer a dry county.
Delta County is represented in the Texas House of Representatives by Republican Larry Phillips of Sherman, Texas.
- Lamar County (north)
- Red River County (east)
- Franklin County (east)
- Hopkins County (south)
- Hunt County (southwest)
- Fannin County (northwest)
|U.S. Decennial Census
1850–2010  2010–2014 
As of the census  of 2000, there were 5,506 people, 2,094 households, and 1,461 families residing in the county. The population density was 19 people per square mile (7/km²). There were 2,410 housing units at an average density of 9 per square mile (3/km²). The racial makeup of the county was 87.93% White, 8.28% Black or African American, 0.77% Native American, 0.11% Asian, 0.04% Pacific Islander, 1.18% from other races, and 1.69% from two or more races. About 3.10% of the population were Hispanic or Latino of any race.
There were 2,094 households, of which 30.20% had children under the age of 18 living with them, 56.40% were married couples living together, 10.00% had a female householder with no husband present, and 30.20% were nonfamilies. About 27.50% of all households were made up of individuals and 14.70% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.02.
In the county, the population was spread out with 25.60% under the age of 18, 7.50% from 18 to 24, 25.50% from 25 to 44, 23.80% from 45 to 64, and 17.70% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 94.50 males. For every 100 females age 18 and over, there were 88.90 males.
The median income for a household in the county was $29,094, and the median income for a family was $37,925. Males had a median income of $31,597 versus $20,296 for females. The per capita income for the county was $15,080. About 14.60% of families and 17.60% of the population were below the poverty line, including 20.50% of those under age 18 and 20.60% of those age 65 or over.
- List of counties in Texas
- Dry counties
- List of museums in North Texas
- Recorded Texas Historic Landmarks in Delta County
- "State & County QuickFacts". United States Census Bureau. Archived from the original on July 9, 2011. Retrieved December 10, 2013.
- "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 103.
- "TABC Local Option Elections". Retrieved 2018-07-29.
- "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved April 22, 2015.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Archived from the original on May 12, 2015. Retrieved April 22, 2015.
- "Texas Almanac: Population History of Counties from 1850–2010" (PDF). Texas Almanac. Retrieved April 22, 2015.
- "American FactFinder". United States Census Bureau. Archived from the original on 2013-09-11. Retrieved 2011-05-14.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-07-21.
- Delta County website
- Delta County Chamber of Commerce website
- Delta County in Handbook of Texas Online
- Delta County History at HistoricTexas.net
- Jot 'Em Down, Delta County, Texas data at Internet Accuracy Project