ZIP code 21244 is located in Maryland and covers a slightly less than average land area compared to other ZIP codes in the United States. It also has a slightly larger than average population density. The people living in ZIP code 21244 are primarily black or African American.he percentage of children under 18 living in the 21244 ZIP code is slightly larger than average compared to other areas of the country. The majority of household are rented. Among all households, ZIP code 21244 has a small percentage of vacancies.