St. Mary's County, Maryland

St. Mary's County, Maryland, has 31 towns and 28 ZIP codes, in area codes 301 (overlay 227) and 410 (overlay 443).

Towns in St. Mary's County, A to Z

Town	ZIP codes	Area codes
Abell	20606	301, 227, 240
Avenue	20609	301, 227, 240
Bushwood	20618	301, 227, 240
California	20619	301, 227, 240
Callaway	20620	301, 227, 240
Chaptico	20621	301, 227, 240
Clements	20624	301, 227, 240
Coltons Point	20626	301, 227, 240
Compton	20627	301, 227, 240
Dameron	20628	301, 227, 240
Drayden	20630	301, 227, 240
Drum Point	nearest20629, 20670, 20688	410, 443, 667, 301, 227, 240
Great Mills	20634	301, 227, 240
Helen	20635	301, 227, 240
Hollywood	20636	301, 227, 240
Leonardtown	20650	301, 227, 240
Lexington Park	20653	301, 227, 240
Loveville	20656	301, 227, 240
Mechanicsville	20659	301, 227, 240
Morganza	20660	301, 227, 240
Park Hall	20667	301, 227, 240
Patuxent River	20670	301, 227, 240
Piney Point	20674	301, 227, 240
Ridge	20680	301, 227, 240
Saint Inigoes	20684	301, 227, 240
Saint Marys City	20686	301, 227, 240
Scotland	20687	301, 227, 240
St. George Island	nearest20630, 20674, 20684	301, 227, 240
Tall Timbers	20690	301, 227, 240
Valley Lee	20692	301, 227, 240
Wildewood	nearest20619, 20636, 20688	301, 227, 240, 410, 443, 667

ZIP codes in St. Mary's County

20606Abell301, 227, 240
20609Avenue301, 227, 240
20618Bushwood301, 227, 240
20619California301, 227, 240
20620Callaway301, 227, 240
20621Chaptico301, 227, 240
20624Clements301, 227, 240
20626Coltons Point301, 227, 240
20627Compton301, 227, 240
20628Dameron301, 227, 240
20630Drayden301, 227, 240
20634Great Mills301, 227, 240
20635Helen301, 227, 240
20636Hollywood301, 227, 240
20650Leonardtown301, 227, 240
20653Lexington Park301, 227, 240
20656Loveville301, 227, 240
20659Mechanicsville301, 227, 240
20660Morganza301, 227, 240
20667Park Hall301, 227, 240
20670Patuxent River301, 227, 240
20674Piney Point301, 227, 240
20680Ridge301, 227, 240
20684Saint Inigoes301, 227, 240
20686Saint Marys City301, 227, 240
20687Scotland301, 227, 240
20690Tall Timbers301, 227, 240
20692Valley Lee301, 227, 240

Area codes in St. Mary's County

Area code 301
In service since 1947. Shares its area with 227 and 240. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area code 227
In service since June 14, 2023. Shares its area with 240 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area code 410
In service since October 6, 1991. Shares its area with 443 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area code 443
In service since June 1, 1997. Shares its area with 410 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Local numbers in area code 301

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