Celina is located in Collin county Texas with a geographic area of 32.3 square miles. The total population in Celina is 13,608 with 53.0% male and 47.0% female. Children under age 5 represent 5.7% of the population, under age 18 equal 29.2% of the population and over age 65 is 12.5% of the population. The median household income is $114,807, per capita income is $50,102. There are a total of 4,675 housing units with 87.9% owner occupied. Education includes 9.2% of residents that are high school graduates and 46.9% with a bachelor's degree or higher. The average temperature in Celina in the summer is 83 degrees, and in the winter 49 degrees.