Durham county is located in North carolina with a geographic area of 297.8 square miles. The total population in Durham county is 317,665 with 47.8% male and 52.2% female. Children under age 5 represent 6.4% of the population, under age 18 equal 20.8% of the population and over age 65 is 13.1% of the population. The median household income is $62,812, per capita income is $36,759. There are a total of 130,128 housing units with 55.4% owner occupied. Education includes 14.1% of residents that are high school graduates and 54.4% with a bachelor's degree or higher. The average temperature in Durham county in the summer is 77 degrees, and in the winter 41 degrees.