New Castle County Open Houses

There are 280 real estate listings found in New Castle County, DE. There are 18 cities in New Castle County which include Wilmington , Middletown , Newark , New Castle , and Bear . There are 35 zip codes in New Castle County which include 19709 , 19702 , 19720 , 19701 , and 19805 . View our New Castle County real estate area information to learn about the weather, local school districts, demographic data, and general information about New Castle County, DE. Get in touch with a New Castle County real estate agent who can help you find the home of your dreams in New Castle County. Use our mortgage calculator to see how much it would be to finance a home in New Castle County. Not ready to buy yet? Find and compare apartments for rent in New Castle County.