Barstow, MD is a city located in Calvert County, Maryland and has a land area of 0.00 square miles (0.00 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Barstow, Maryland and it is 20610. The area code(s) for Barstow is 443/410.
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