There are 40 real estate agents found in 21803. View our 21803 real estate area information to learn about the weather, local school districts, demographic data, and general information about 21803. Get in touch with a 21803 real estate agent who can help you find the home of your dreams in 21803. Use our mortgage calculator to see how much it would be to finance a home in 21803. Not ready to buy yet? Find and compare apartments for rent in 21803.