Elmendorf is a city in Bexar County, Texas, United States. It is part of the San Antonio—New Braunfels metropolitan statistical area. Its population was 1,488 at the 2010 census. It was founded in 1885, and named after Henry Elmendorf, a former mayor of San Antonio. For a long time, the biggest employer was Star Clay Products.
Elmendorf is located in southeastern Bexar County at 29°15′41″N 98°19′50″W (29.261357, -98.330547), 17 miles (27 km) southeast of downtown San Antonio at the junction of Farm Road 327 and the Southern Pacific Railroad. A small portion of Elmendorf extends to the southeast into Wilson County.
According to the United States Census Bureau, the city has a total area of 4.5 square miles (11.7 km2), of which 0.023 square miles (0.06 km2), or 5.00%, is covered by water.
As of the census of 2000, 664 people, 226 households, and 162 families were living in the city. The population density was 537.4 people per sq mi (206.8/km2). The 266 housing units averaged 215.3/sq mi (82.8/km2).