About Northumberland
Northumberland is located in Northumberland county Pennsylvania with a geographic area of 1.6 square miles. The total population in Northumberland is 3,732 with 49.0% male and 51.0% female. Children under age 5 represent 4.7% of the population, under age 18 equal 22.8% of the population and over age 65 is 23.5% of the population. The median household income is $63,668, per capita income is $29,439. There are a total of 1,629 housing units with 71.3% owner occupied. Education includes 49.4% of residents that are high school graduates and 27.3% with a bachelor's degree or higher. The average temperature in Northumberland in the summer is 73 degrees, and in the winter 33 degrees.