Colleyville, TX has a population of 24,982 and is the 1,738th largest city in the United States. The population density is 1,906 per sq mi which is 1866% higher than the Texas average and 2003% higher than the national average. The median age in Colleyville is 48 which is approximately 39% higher than the Texas average of 34. In Colleyville, 75% of the population over 15 years of age are married, 89% speak English and 3% speak Spanish. 48% of Colleyville residents were born in Texas, 44% were born out of state, 2% were born outside of the United States and 7% were foreign born.