St. leonard is located in Calvert county Maryland with a geographic area of 2.3 square miles. The total population in St. leonard is 549 with 47.0% male and 53.0% female. Children under age 5 represent 2.0% of the population, under age 18 equal 19.7% of the population and over age 65 is 14.9% of the population. The median household income is $160,139, per capita income is $61,320. There are a total of 197 housing units with 100.0% owner occupied. Education includes 11.2% of residents that are high school graduates and 39.6% with a bachelor's degree or higher. The average temperature in St. leonard in the summer is 74 degrees, and in the winter 37 degrees.
