Schertz is a city in Guadalupe, Bexar, and Comal counties in the U.S. state of Texas, within the San Antonio–New Braunfels metropolitan area. The population was 42,002 at the 2020 census, up from 31,465 at the 2010 census.
The original center of Schertz is located in western Guadalupe County at 29°33′21″N 98°16′22″W. City Hall, located at 1400 Schertz Parkway, is also in Guadalupe County. Large tracts of the city now extend north into Comal County and south into Bexar County. Cibolo Creek, forming the boundary between Guadalupe and Bexar counties, runs through the city just south of the historic downtown.