Abingdon is located in Harford county Maryland with a geographic area of 2.8 square miles. The total population in Abingdon is 5,324 with 51.7% male and 48.3% female. Children under age 5 represent 8.8% of the population, under age 18 equal 20.2% of the population and over age 65 is 7.8% of the population. The median household income is $128,478, per capita income is $44,444. There are a total of 1,801 housing units with 94.3% owner occupied. Education includes 13.8% of residents that are high school graduates and 55.9% with a bachelor's degree or higher. The average temperature in Abingdon in the summer is 74 degrees, and in the winter 37 degrees.