Elmendorf is a city located in Bexar County and Wilson County, Texas, United States. It is part of the San Antonio—New Braunfels metropolitan statistical area. Its population was 1,862 at the 2020 census. It was founded in 1885, and named after Henry Elmendorf, a former mayor of San Antonio, and a German-Texan. For a long time, the biggest employer was Star Clay Products.