NPA - 301 Maryland (MD)

The 301 Area Code is located in the state of Maryland. Area Code 301 is one of the 312 three-digit telephone area codes in the USA. It covers roughly 434,795 unique phone numbers near the cities of California-Lexington Park.

NPA - 301 History: Area code 301 was put into service. In 1991 area code 301 was split to form area code 410. In 1997 area codes 301 was overlaid with area code 240.

There are a few special area codes with the last two digits 422 match, these are known as easily recognizable codes (ERCs). The 8xx set of numbers are reserved for toll-free services and communication.

Those numbers can be found in the following cities or locations: Maryland (MD).

1. AreaCodes Directory
2. 301

301 Stats:

Cities in area code 301:

Accident, Adamstown, Annapolis, Ashton, Avenue, Baltimore, Beltsville, Bethesda, Bittinger, Bowie, Brandywine, Brunswick, Bryans Road, Cabin John, Capitol Heights, Chevy Chase, Clear Spring, Clinton, College Park, Columbia, Cumberland, Damascus, Edgewater, Emmitsburg, Fort Washington, Frederick, Friendsville, Frostburg, Gaithersburg, Glen Echo, Glenn Dale, Grantsville, Greenbelt, Hagerstown, Hancock, Highfield, Hollywood, Hughesville, Hyattsville, Indian Head, Issue, Keedysville, Kensington, Kitzmiller, La Plata, Landover, Lanham, Laurel, Leonardtown, Lexington Park, Lonaconing, Mc Henry, Mccoole, Mechanicsville, Middletown, Monrovia, Mount Airy, Mount Rainier, Mount Savage, Myersville, Nanjemoy, New Market, North Beach, Oakland, Odenton, Oldtown, Oxon Hill, Patuxent River, Poolesville, Ridge, Rockville, Sandy Spring, Silver Spring, Smithsburg, Suitland, Swanton, Tall Timbers, Temple Hills, Thurmont, Upper Marlboro, Valley Lee, Waldorf, Walkersville, Westernport, Williamsport.

Related phone operators in Area Code 301:

AT&T Local, Baltimore-washington Telephone (bwt), Bandwidth.com Clec, Broadwing Communications. LLC, Cavalier Telephone Mid-atlantic, Cellco Partnership DBA Verizon Wireless, Comcast Phone Of Northern Maryland, Core Communications, Core Communications - PA, Idt America Corp, Level 3 Communications, Mci Worldcom Communications, Mcimetro Access Transmission Services LLC, Metro PCS, Mountain Communications DBA Procom, New Cingular Wireless PCS - DC, New Frontiers Telecommunications, Omnipoint Communications Cap Operations, Paetec Communications, Quantum Telecommunications, Sprint Spectrum L.p., Starpower Communications, Telcove Operations, Teleport Communications America, Teleport Communications America - DC, Tw Telecom Of Maryland LLC, Us Lec Of Maryland, Usa Mobility Wireless, Uscoc Of Cumberland DBA United States Cel Md, Vdl DBA Global Telecom Brokers, Verizon Maryland, Virginia PCS Alliance, L.c., Xo Maryland, Ymax Communications Corp..