Schertz, TX has a population of 37,597 and is the 1,102nd largest city in the United States. The population density is 1,179 per sq mi which is 1116% higher than the Texas average and 1201% higher than the national average. The median age in Schertz is 37 which is approximately 7% higher than the Texas average of 34. In Schertz, 62% of the population over 15 years of age are married, 84% speak English and 12% speak Spanish. 46% of Schertz residents were born in Texas, 42% were born out of state, 5% were born outside of the United States and 7% were foreign born.