The county was created on May 15, 1821, along with 4 other counties in the state, and later reduced in size with the formation of Bibb, Crawford, Pulaski, Macon, and Peach counties.[3] It was named after Georgia governor John Houstoun, with the spelling being a common 19th-century variation that later evolved to "Houston".[4] The pronunciation, however, remains to this day "howston."[5] The geographic center of the county was given the name Wattsville, which was later changed to Perry.[5]
According to the U.S. Census Bureau, the county has a total area of 380 square miles (980 km2), of which 376 square miles (970 km2) is land and 4.4 square miles (11 km2) (1.2%) is water.[6] The county is located in the upper Atlantic coastal plain region of the state.
The vast majority of Houston County is located in the Lower Ocmulgee River sub-basin of the Altamaha River basin. The very northern edge of the county, north of Centerville and Warner Robins, is located in the Upper Ocmulgee River sub-basin of the same Altamaha River basin. The very southwestern corner of Houston County, well west of Interstate 75, is located in the Middle Flint River sub-basin of the ACF River Basin (Apalachicola-Chattahoochee-Flint River Basin).[7]
Houston County voted for conservative Democrats for most of the twentieth century, and gradually switched to voting for conservative Republicans closer to the century's end and into the twenty-first. In the 2018 gubernatorial election, while she did not carry Houston County, Stacey Abrams improved on Democratic margins in the county, improving five percent compared to Hillary Clinton's 2016 presidential run and by four percent compared to Barack Obama's 2008 run. Houston was one of five counties not carried by Abrams which improved their Democratic margins.[20] In 2020, Joe Biden improved Democratic margins to their best since Jimmy Carter carried it in 1980. He also became the first non-Georgian Democrat to win 40 percent of the county's vote since 1960.
United States presidential election results for Houston County, Georgia[21]
^"Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
^"Houston County". The New Georgia Encyclopedia. Georgia Humanities Council, in partnership with the University of Georgia Press, the University System of Georgia/GALILEO, and the Office of the Governor. Retrieved September 24, 2008.
^ ab"Houston County". The New Georgia Encyclopedia. Georgia Humanities Council, in partnership with the University of Georgia Press, the University System of Georgia/GALILEO, and the Office of the Governor. Retrieved September 1, 2016.