What time zone is area code 301 in?

Area code 301 uses Eastern Time.

What area codes overlay 301?

227 and 240 serve the same area as 301. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.

Is a call from area code 301 a scam?

The area code alone doesn’t tell you. Most calls from 301 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 301 number, let it go to voicemail.

Can a 301 number be outside Maryland?

Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 301 caller can be anywhere.

Area code 301

Where is area code 301?

Silver Spring, Bethesda and Rockville, Maryland

Local time: … (Eastern Time)

State	Maryland
Country	United States
Main cities	Silver Spring, Bethesda and Rockville
Time zone	Eastern Time
Overlay area codes	227 and 240
In service since	1947
Assigned prefixes	784
Dialing format	(301) XXX-XXXX · +1 301 XXX XXXX from abroad

Look up a 301 number

Cities and towns in area code 301

Listed by how many phone prefixes (the 3 digits after the area code) are assigned to each place in 301.

Silver Spring, MD (126)
Bethesda, MD (88)
Rockville, MD (68)
Beltsville, MD (50)
Lanham, MD (44)
Frederick, MD (37)
Temple Hills, MD (37)
Gaithersburg, MD (34)
Waldorf, MD (25)
Laurel, MD (23)
Bowie, MD (21)
Hagerstown, MD (21)
Oxon Hill, MD (16)
Cumberland, MD (14)
California, MD (10)
Wsng238z14, MD (10)
Clinton, MD (9)
Myersville, MD (9)
Upper Marlboro, MD (9)
Leonardtown, MD (8)
Oakland, MD (8)
Olney, MD (8)
Germantown, MD (7)
Damascus, MD (6)
Brandywine, MD (5)
Bryans Road, MD (5)
Columbia, MD (5)
Damascs240, MD (4)
La Plata, MD (4)
Wsng238z15, MD (4)
Fort Washington, MD (3)
Hyattsville, MD (3)
Keedysvl, MD (3)
Mechanicsville, MD (3)
Potomac, MD (3)
Ashton238, MD (2)
Brunswick, MD (2)
Buckeystn, MD (2)
Clear Spring, MD (2)
Friendsvl, MD (2)
Frostburg, MD (2)
Greenbelt, MD (2)
Kitzmiller, MD (2)
Mount Airy, MD (2)
New Market, MD (2)
Poolesville, MD (2)
Takoma Park, MD (2)
Walkersville, MD (2)
Accokeek, MD (1)
Baltimore, MD (1)
Bittinger, MD (1)
Burtonsville, MD (1)
Capitol Heights, MD (1)
Emmitsburg, MD (1)
Flintstone, MD (1)
Grantsville, MD (1)
Hancock, MD (1)
Highfield, MD (1)
Hollywood, MD (1)
Hughesville, MD (1)
Indian Head, MD (1)
Kensington, MD (1)
Lexington Park, MD (1)
Lonaconing, MD (1)
McCoole, MD (1)
Middletown, MD (1)
Mt Savage, MD (1)
Nanjemoy, MD (1)
Newburg, MD (1)
Ridge, MD (1)
Smithsburg, MD (1)
Thurmont, MD (1)
Towson, MD (1)
Westernport, MD (1)
Williamsport, MD (1)
Wsng238z13, MD (1)

Phone companies in area code 301

The carriers that hold the most 301 prefixes. People can move their number to another carrier, so this shows who first issued a number, not who serves it today.

Prefixes	Carrier
463	Verizon Maryland
51	Verizon Wireless
47	New Cingular Wireless PCS (AT&T)
43	Mcimetro Access Transmission Services
33	Teleport Communications America
31	Omnipoint Communications Cap Operations (T-Mobile)
15	Level 3 Communications
14	Metropcs (T-Mobile)

All 784 prefixes in area code 301

Pick the 3 digits after the area code to see that prefix’s city and carrier.

Area codes that overlay 301

Questions

Where is area code 301?: Area code 301 is in Maryland. It serves Silver Spring, Bethesda, Rockville, Beltsville and Lanham and 71 other cities and towns.
What time zone is area code 301 in?: Area code 301 uses Eastern Time.
What area codes overlay 301?: 227 and 240 serve the same area as 301. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.
Is a call from area code 301 a scam?: The area code alone doesn’t tell you. Most calls from 301 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 301 number, let it go to voicemail.
When did area code 301 start?: 301 went into service in 1947.
Can a 301 number be outside Maryland?: Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 301 caller can be anywhere.

Other area codes in Maryland

Area code	Main cities
410	Baltimore, Annapolis and Towson
443	Baltimore, Annapolis and Towson
667	Baltimore, Owings Mills and Aberdeen