Farmington is located in Strafford county New hampshire with a geographic area of 6.3 square miles. The total population in Farmington is 4,140 with 51.2% male and 48.8% female. Children under age 5 represent 9.1% of the population, under age 18 equal 23.7% of the population and over age 65 is 9.6% of the population. The median household income is $41,962, per capita income is $24,183. There are a total of 1,706 housing units with 63.4% owner occupied. Education includes 35.5% of residents that are high school graduates and 14.4% with a bachelor's degree or higher. The average temperature in Farmington in the summer is 68 degrees, and in the winter 23 degrees.