Dellwood is located in St. louis county Missouri with a geographic area of 1.0 square miles. The total population in Dellwood is 5,010 with 53.7% male and 46.3% female. Children under age 5 represent 5.5% of the population, under age 18 equal 25.5% of the population and over age 65 is 12.4% of the population. The median household income is $60,038, per capita income is $24,697. There are a total of 2,000 housing units with 52.5% owner occupied. Education includes 44.3% of residents that are high school graduates and 13.7% with a bachelor's degree or higher. The average temperature in Dellwood in the summer is 77 degrees, and in the winter 32 degrees.