Fair Oaks Ranch is a city in Bexar, Comal, and Kendall counties in the U.S. state of Texas. The city was name for Ralph E. Fair, Sr, a successful oilman and rancher who used to operate a ranch that became the town. The population was 9,833 at the 2020 census, and an estimated 10,505 in 2021. It is part of the San Antonio-New Braunfels Metropolitan Statistical Area.