Jefferson County is a county located in the U.S. state of Georgia. As of the 2020 census, the population was 15,709. The county seat and largest city is Louisville. The county was created on February 20, 1796, and named for Thomas Jefferson, the main author of the Declaration of Independence who became the third president of the United States.

Geography

According to the U.S. Census Bureau, the county has a total area of 530 sqmi, of which 526 sqmi is land and 3.2 sqmi (0.6%) is water. The small northern portion of Jefferson County, defined by a line running from Stapleton southeast and just south of State Route 80, is located in the Brier Creek sub-basin of the Savannah River basin. The entire rest of the county is located in the Upper Ogeechee River sub-basin of the Ogeechee River basin.

Major highways

U.S. Route 1 Business (Louisville) U.S. Route 1 Business (Wadley)

Adjacent counties

Communities

Cities

Towns

Census-designated place

Demographics

As of the 2020 United States census, there were 15,709 people, 5,664 households, and 3,598 families residing in the county.

Education

Politics

Jefferson County leans Democratic in presidential elections; it voted for Democrats in every presidential election from 1992 to 2020. In 2024, Donald Trump became the first Republican since George H. W. Bush in 1988 to carry the county. It is now a Democratic-leaning swing county.