Carrollton is a city in Denton, Dallas, and Collin counties in Texas. As of the 2010 census, its population was 119,097, making it the twenty-third most populous city in Texas.
In the city, the population was spread out with 26.0% under the age of 18, 8.5% from 18 to 24, 29.7% from 25 to 44, 27.8% from 45 to 64, and 8.0% who were 65 years of age or older. The median age was 35.6 years. As of the 2010 census, the total population was 119,097, with 43,299 households and 31,073 families residing in the city. The population density was 3,209.8 people per square mile. There were 45,508 housing units at an average density of 1,253 per square mile