Missouri City, TX has a population of 71,732 and is the 505th largest city in the United States. The population density is 2,486 per sq mi which is 2465% higher than the Texas average and 2644% higher than the national average. The median age in Missouri City is 38 which is approximately 12% higher than the Texas average of 34. In Missouri City, 59% of the population over 15 years of age are married, 70% speak English and 13% speak Spanish. 51% of Missouri City residents were born in Texas, 26% were born out of state, 1% were born outside of the United States and 22% were foreign born.