Murphy is located in Collin county Texas with a geographic area of 5.7 square miles. The total population in Murphy is 20,711 with 50.2% male and 49.8% female. Children under age 5 represent 5.8% of the population, under age 18 equal 32.8% of the population and over age 65 is 9.6% of the population. The median household income is $140,828, per capita income is $42,641. There are a total of 5,659 housing units with 89.7% owner occupied. Education includes 11.3% of residents that are high school graduates and 61.6% with a bachelor's degree or higher. The average temperature in Murphy in the summer is 83 degrees, and in the winter 49 degrees.
