Lewisville, TX has a population of 102,327 and is the 301st largest city in the United States. The population density is 2,790 per sq mi which is 2779% higher than the Texas average and 2980% higher than the national average. The median age in Lewisville is 32 which is approximately 6% lower than the Texas average of 34. In Lewisville, 52% of the population over 15 years of age are married, 65% speak English and 25% speak Spanish. 48% of Lewisville residents were born in Texas, 29% were born out of state, 2% were born outside of the United States and 21% were foreign born.