Union township is located in Washington county Pennsylvania with a geographic area of 1.8 square miles. The total population in Union township is 1,471 with 48.1% male and 51.9% female. Children under age 5 represent 5.2% of the population, under age 18 equal 21.1% of the population and over age 65 is 26.7% of the population. The median household income is $68,846, per capita income is $37,542. There are a total of 544 housing units with 89.5% owner occupied. Education includes 27.4% of residents that are high school graduates and 33.1% with a bachelor's degree or higher. The average temperature in Union township in the summer is 73 degrees, and in the winter 33 degrees.
