What is an Area Code? An area code is a section of a telephone number that denotes the broad area that the phone receiving the call is based in. Area codes were first introduced circa 1947 for operator use only. Area codes are three-digit numbers that represent Numbering Plan Areas (NPAs). The area code for a particular city or region is the series of numbers that you have to dial before someone’s number if you are making a phone call to that place from a different area. Area code 301 serves the state of Maryland.
The Table Below Shows the Towns and Cities That Use Area Code 301
| Accident Accokeek Adamstown Adelphi Andrews AFB Antietam Aquasco Ashton-Sandy Spring Aspen Hill Baden Bagtown Bakersville Ballenger Creek Barnesville Barrelville Barton Bartonsville Beaver Creek Bel Air Beltsville Benedict Bensville Berwyn Heights Bethesda Bier Big Pool Big Spring Bladensburg Bloomington Boonsboro Bowie Bowling Green Bowmans Addition Braddock Heights Brandywine Breathedsville Brentwood Brock Hall Brookeville Brookmont Brownsville Brunswick Bryans Road Bryantown Buckeystown Burkittsville Burtonsville Cabin John California Calverton Camp Springs Capitol Heights Carlos Cavetown Cearfoss Cedarville Charlotte Hall Charlton Cheverly Chevy Chase Chevy Chase Chevy Chase Section Five Chevy Chase Section Three Chevy Chase View Chevy Chase Village Chewsville Chillum Clarksburg Clarysville Clear Spring Clinton Cloverly Cobb Island Colesville College Park Colmar Manor Coral Hills | Corriganville Cottage City Crellin Cresaptown Croom Cumberland Damascus Danville Dargan Darnestown Dawson Deer Park Derwood Detmold District Heights Downsville Dunkirk Eagle Harbor Eakles Mill East Riverdale Eckhart Mines Edgemont Edmonston Ellerslie Emmitsburg Ernstville Fairland Fairmount Heights Fairplay Fairview Fairwood Finzel Flintstone Forest Glen Forest Heights Forestville Fort Ritchie Fort Washington Fountainhead-Orchard Hills Four Corners Franklin Frederick Friendly Friendship Heights Village Friendsville Frostburg Fulton Funkstown Gaithersburg Gapland Garrett Park Garretts Mill Germantown Gilmore Glassmanor Glenarden Glen Echo Glenmont Glenn Dale Golden Beach Gorman Grahamtown Grantsville Greenbelt Greensburg Hagerstown Halfway Hancock Highfield-Cascade Highland Hillandale Hillcrest Heights Hughesville Hutton Hyattsville Indian Head Indian Springs Jefferson | Jennings Jugtown Keedysville Kemp Mill Kemps Mill Kensington Kettering Kitzmiller Klondike Konterra Lake Arbor Landover Landover Hills Langley Park Lanham La Plata Largo Laurel La Vale Layhill Laytonsville Leisure World Leitersburg Leonardtown Lexington Park Libertytown Linganore Little Orleans Loch Lynn Heights Lonaconing Luke McCoole Mapleville Marlboro Meadows Marlboro Village Marlow Heights Marlton Martin’s Additions Maryland City Maugansville Mechanicsville Melwood Mercersville Middleburg Middletown Midland Midlothian Mitchellville Monrovia Montgomery Village Morningside Moscow Mount Aetna Mountain Lake Park Mount Airy Mount Briar Mount Lena Mount Rainier Mount Savage Myersville National National Harbor New Carrollton New Market Nikep North Bethesda North Brentwood North Chevy Chase North Kensington North Laurel North Potomac Oakland Ocean Oldtown Olney Oxon Hill Paramount-Long Meadow Pecktonville | Peppermill Village Pinesburg Piney Point Pleasant Grove Point of Rocks Pomfret Pondsville Poolesville Port Tobacco Village Potomac Potomac Heights Potomac Park Queen Anne Queenland Rawlings Redland Reid Ringgold Riverdale Park Robinwood Rock Point Rockville Rohrersville Rosaryville Rosemont Sabillasville St. George Island St. James Sandy Hook San Mar Savage Scaggsville Seabrook Seat Pleasant Shaft Sharpsburg Silver Hill Silver Spring Smithsburg Somerset South Kensington South Laurel Spencerville Springdale Spring Gap Spring Ridge Suitland Summerfield Swanton Takoma Park Tall Timbers Temple Hills Thurmont Tilghmanton Travilah Trego-Rohrersville Station University Park Upper Marlboro Urbana Vale Summit Waldorf Walker Mill Walkersville Washington Grove Westernport West Laurel Westphalia Wheaton White Oak Williamsport Wilson-Conococheague Woodland Woodlawn Woodmore Woodsboro Yarrowsburg Zihlman |