Somerset is located in Bristol county Massachusetts with a geographic area of 7.9 square miles. The total population in Somerset is 18,160 with 48.7% male and 51.3% female. Children under age 5 represent 3.6% of the population, under age 18 equal 18.2% of the population and over age 65 is 25.7% of the population. The median household income is $90,260, per capita income is $44,478. There are a total of 7,118 housing units with 83.1% owner occupied. Education includes 23.4% of residents that are high school graduates and 37.2% with a bachelor's degree or higher. The average temperature in Somerset in the summer is 70 degrees, and in the winter 30 degrees.