Bethlehem is located in Lehigh county Pennsylvania with a geographic area of 19.1 square miles. The total population in Bethlehem is 75,571 with 47.9% male and 52.1% female. Children under age 5 represent 5.7% of the population, under age 18 equal 18.4% of the population and over age 65 is 17.2% of the population. The median household income is $56,034, per capita income is $33,480. There are a total of 29,359 housing units with 50.6% owner occupied. Education includes 29.9% of residents that are high school graduates and 31.1% with a bachelor's degree or higher. The average temperature in Bethlehem in the summer is 71 degrees, and in the winter 33 degrees.
