Plano is located in Collin county Texas with a geographic area of 71.7 square miles. The total population in Plano is 288,870 with 49.3% male and 50.7% female. Children under age 5 represent 5.6% of the population, under age 18 equal 22.3% of the population and over age 65 is 13.2% of the population. The median household income is $96,348, per capita income is $49,455. There are a total of 107,320 housing units with 58.9% owner occupied. Education includes 8.8% of residents that are high school graduates and 63.1% with a bachelor's degree or higher. The average temperature in Plano in the summer is 83 degrees, and in the winter 49 degrees.