Gardner is located in Worcester county Massachusetts with a geographic area of 22.1 square miles. The total population in Gardner is 20,605 with 50.6% male and 49.4% female. Children under age 5 represent 6.4% of the population, under age 18 equal 18.6% of the population and over age 65 is 17.4% of the population. The median household income is $51,708, per capita income is $27,964. There are a total of 8,535 housing units with 55.5% owner occupied. Education includes 28.2% of residents that are high school graduates and 21.7% with a bachelor's degree or higher. The average temperature in Gardner in the summer is 70 degrees, and in the winter 30 degrees.
