Herndon is located in Northumberland county Pennsylvania with a geographic area of 0.8 square miles. The total population in Herndon is 374 with 53.5% male and 46.5% female. Children under age 5 represent 9.4% of the population, under age 18 equal 26.2% of the population and over age 65 is 19.8% of the population. The median household income is $50,833, per capita income is $21,845. There are a total of 140 housing units with 71.4% owner occupied. Education includes 40.7% of residents that are high school graduates and 17.9% with a bachelor's degree or higher. The average temperature in Herndon in the summer is 73 degrees, and in the winter 33 degrees.
