New castle is located in Lawrence county Pennsylvania with a geographic area of 8.3 square miles. The total population in New castle is 21,805 with 47.0% male and 53.0% female. Children under age 5 represent 6.2% of the population, under age 18 equal 23.4% of the population and over age 65 is 18.4% of the population. The median household income is $35,117, per capita income is $19,741. There are a total of 9,428 housing units with 54.6% owner occupied. Education includes 43.0% of residents that are high school graduates and 17.4% with a bachelor's degree or higher. The average temperature in New castle in the summer is 70 degrees, and in the winter 33 degrees.
