Brentwood is located in Prince george's county Maryland with a geographic area of 0.4 square miles. The total population in Brentwood is 3,443 with 54.0% male and 46.0% female. Children under age 5 represent 9.1% of the population, under age 18 equal 28.5% of the population and over age 65 is 9.0% of the population. The median household income is $80,737, per capita income is $29,189. There are a total of 1,045 housing units with 39.9% owner occupied. Education includes 20.7% of residents that are high school graduates and 33.2% with a bachelor's degree or higher. The average temperature in Brentwood in the summer is 74 degrees, and in the winter 37 degrees.