Denton, TX has a population of 128,421 and is the 212th largest city in the United States. The population density is 1,340 per sq mi which is 1282% higher than the Texas average and 1379% higher than the national average. The median age in Denton is 29 which is approximately 17% lower than the Texas average of 34. In Denton, 42% of the population over 15 years of age are married, 77% speak English and 17% speak Spanish. 57% of Denton residents were born in Texas, 29% were born out of state, 1% were born outside of the United States and 13% were foreign born.