Great Mills Zip Codes - Saint Marys County MD

Great Mills, MD Zip Code Map

Great Mills, MD is a city located in Saint Marys County, Maryland and has a land area of 6.99 square miles (18.10 km2). The water area for the city is 0.07 square miles or 0.18 km2. There is one unique zip code in Great Mills, Maryland and it is 20634. The area code(s) for Great Mills is 240/301.

Zip Codes for Great Mills, MD (1)
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20634 Great Mills Saint Marys

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