Abilene is a city in Taylor and Jones counties, Texas, United States. Its population was 125,182 at the 2020 census. It is the principal city of the Abilene metropolitan statistical area, which had a population of 176,579 as of 2020. Abilene is home to three Christian universities: Abilene Christian University, McMurry University, and Hardin–Simmons University. It is the county seat of Taylor County. Dyess Air Force Base is located on the west side of the city.