Area Code

Cities Covered by 240 Area Code

Andrews Air Force Base Annapolis Ashton Bel Alton Bethesda
Bowie Brandywine Brentwood Brunswick Bryans Road
California Callaway Cascade Cheltenham Chevy Chase
Clarksburg Clinton College Park Columbia Crofton
Cumberland Damascus Derwood District Heights Elkridge
Emmitsburg Faulkner Fort Washington Frederick Frostburg
Gaithersburg Germantown Grantsville Great Mills Greenbelt
Hagerstown Halethorpe Hancock Hughesville Hyattsville
Ijamsville Indian Head Issue Jessup Kensington
La Plata Lanham Laurel Leonardtown Lexington Park
Libertytown Lothian Mechanicsville Middletown Monrovia
Montgomery Village Mount Airy Mount Rainier Myersville Nanjemoy
New Market Oakland Odenton Oxon Hill Patuxent River
Poolesville Port Tobacco Potomac Prince Frederick Rawlings
Ridge Riverdale Rockville Sabillasville Sandy Spring
Savage Shady Side Silver Spring Smithsburg Suitland
Takoma Park Temple Hills Thurmont Upper Marlboro Waldorf
Walkersville Westernport Williamsport Woodsboro

Related Area Codes

202, 240, 301, 410, 443, 703, 304