Wylie is located in Collin county Texas with a geographic area of 22.1 square miles. The total population in Wylie is 51,251 with 48.3% male and 51.7% female. Children under age 5 represent 7.8% of the population, under age 18 equal 28.5% of the population and over age 65 is 6.7% of the population. The median household income is $98,484, per capita income is $34,124. There are a total of 15,730 housing units with 74.3% owner occupied. Education includes 14.5% of residents that are high school graduates and 40.2% with a bachelor's degree or higher. The average temperature in Wylie in the summer is 81 degrees, and in the winter 49 degrees.