Seal beach is located in Orange county California with a geographic area of 11.3 square miles. The total population in Seal beach is 24,268 with 45.3% male and 54.7% female. Children under age 5 represent 3.3% of the population, under age 18 equal 13.0% of the population and over age 65 is 41.7% of the population. The median household income is $72,596, per capita income is $58,801. There are a total of 12,555 housing units with 76.4% owner occupied. Education includes 12.4% of residents that are high school graduates and 52.0% with a bachelor's degree or higher. The average temperature in Seal beach in the summer is 73 degrees, and in the winter 43 degrees.