Mason is a city in, and the county seat of, Mason County, Texas, United States. The city is an agricultural community on Comanche Creek southwest of Mason Mountain, on the Edwards Plateau and part of the Llano Uplift. Its population was 2,114 at the 2010 census.

Mason County is a rural county located on the Edwards Plateau in the U.S. state of Texas. At the 2020 census, its population was 3,953. Its county seat is Mason. The county is named for Fort Mason, which was located in the county.