Plymouth county is located in Massachusetts with a geographic area of 1,093.4 square miles. The total population in Plymouth county is 518,597 with 48.6% male and 51.4% female. Children under age 5 represent 5.3% of the population, under age 18 equal 21.5% of the population and over age 65 is 18.1% of the population. The median household income is $92,906, per capita income is $45,378. There are a total of 190,355 housing units with 77.2% owner occupied. Education includes 24.2% of residents that are high school graduates and 40.3% with a bachelor's degree or higher. The average temperature in Plymouth county in the summer is 70 degrees, and in the winter 31 degrees.