Lubbock County is a county located in the U.S. state of Texas. The 2020 census placed the population at 310,639. Its county seat and largest city is Lubbock. The county was created in 1876 and organized in 1891. It is named for Thomas Saltus Lubbock, a Confederate colonel and Texas Ranger. Lubbock County, along with Crosby County, and Lynn County, is part of the Lubbock Metropolitan Statistical Area.