Grantsville, MD is a city located in Garrett County, Maryland and has a land area of 97.88 square miles (253.51 km2). The water area for the city is 0.13 square miles or 0.34 km2. There is one unique zip code in Grantsville, Maryland and it is 21536. The area code(s) for Grantsville is 240/301.
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