Stephens County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 9,101. Its county seat is Breckenridge. The county was created in 1858 and organized in 1876. It was originally named Buchanan County, after U.S. President James Buchanan, but was renamed in 1861 for Alexander H. Stephens, the vice president of the Confederate States of America.

Breckenridge is a city and county seat of Stephens County, Texas, Texas, United States. The estimated population was 5,349 as of February 2021. The mayor is Bob Sims.