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Area Code 301 Location & Details

State / Region: Maryland • Country: United States

Major Cities Covered: Frederick, Gaithersburg, Rockville, Bowie, Hagerstown, College Park, Laurel, Greenbelt, Hyattsville, Cumberland

Standard Dial Format
+1 (301) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 301?
MarylandState Hub →
Country Territory
United States
301 Area Code Time Zone
Eastern
301 Overlay Codes
227, 240

Area Code 301 Geographic Map

Interactive location bounds and coverage area for Maryland (Eastern Timezone)

Lat: 39.15° • Lng: -77.32°
📍 Geographic Center: MarylandMap data © OpenStreetMap contributors

Where is Area Code 301 Located?

Telephone area code 301 is assigned to Maryland in United States. It serves cities and metropolitan communities including Frederick, Gaithersburg, Rockville, Bowie, Hagerstown, College Park, Laurel, Greenbelt, Hyattsville, Cumberland.

Historical Context & Area Code Overlay Information:301 serves Maryland (United States).

For local and long-distance calls within area code 301, standard 10-digit dialing (301) XXX-XXXX applies.

Who Called Me from Area Code 301?

Received an unknown call, missed call, or text scam from area code 301? Here is how to trace who is calling from 301 area code and verify unknown numbers safely:

1.
Identify Missed Calls & Voicemails:

Legitimate contacts usually leave a detailed voicemail or caller ID record.

2.
Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 301 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 301:

Search public white-pages or use caller intelligence guides before returning unfamiliar calls.

Learn How Reverse Phone Lookups Work→

How to Call Area Code 301 & Dialing Format

When placing a phone call to a number in area code 301, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (301) + 7-digit number.
  • Calling from an international location outside +1: Dial your country's international exit code (e.g. 011 in US or + on mobile) + 1 + 301 + 7-digit number.
  • Do I need to dial area code 301 for local calls? Yes, 10-digit dialing (area code + line number) is mandatory across North American telephone networks.

Top Cities & Municipalities Served in Area Code 301

Urban centers, census places, and communities within the +1-301 calling area

50 Major Cities Listed
City NameCountyPopulation% of 301 Pop
FrederickFrederick County92,05913.8%
GaithersburgMontgomery County71,11310.7%
RockvilleMontgomery County67,56310.1%
BowiePrince George's County58,3838.8%
HagerstownWashington County44,2286.6%
College ParkPrince George's County35,4185.3%
LaurelHoward County30,2544.5%
GreenbeltPrince George's County24,9483.7%
HyattsvillePrince George's County21,1583.2%
CumberlandAllegany County18,7992.8%
Takoma ParkPrince George's County17,2602.6%
New CarrolltonPrince George's County13,6442.0%
La PlataCharles County12,1371.8%
Mount AiryCarroll County9,8571.5%
BladensburgPrince George's County9,6711.5%
BrunswickFrederick County9,3801.4%
Mount RainierPrince George's County8,3071.2%
Riverdale ParkPrince George's County7,3431.1%
FrostburgAllegany County6,9791.0%
WalkersvilleFrederick County6,5011.0%

Counties Covered by Area Code 301

Geographic county distribution and population coverage across Maryland

County NameTotal Population% of 301 Area% of County
Prince George's County964,59636.1%25%
Montgomery County1,073,04522.5%14%
Frederick County298,85518.9%42%
Washington County157,1408.3%35%
Howard County337,7954.5%9%
Allegany County66,9843.9%38%
Charles County174,4992.5%9%
Carroll County176,7901.5%6%
Garrett County28,4170.9%20%
St. Mary's County116,2160.8%4%
Caroline County34,0590.2%5%

☎️Area Code 301 Exchange Prefixes & Carriers

Showing 50 of 800 central office 3-digit prefixes and assigned telecom carriers

83% Landline14% Wireless3% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(301) 200-💻VoIPINDIANHEADBANDWIDTH.COM CLEC, LLC - MD02/24/2011
(301) 201-📱WirelessWSNGTNZN10NEW CINGULAR WIRELESS PCS, LLC - DC11/07/2022
(301) 202-📱WirelessWSHNGTNZN2NEW CINGULAR WIRELESS PCS, LLC - DC12/19/2008
(301) 203-📞LandlineWSHNGTNZN6VERIZON MARYLAND, INC.N/A
(301) 204-📱WirelessWSHNGTNZN2NEW CINGULAR WIRELESS PCS, LLC - DCN/A
(301) 205-📞LandlineWSNG238Z14VERIZON MARYLAND, INC.N/A
(301) 206-📞LandlineWSNG236Z13VERIZON MARYLAND, INC.N/A
(301) 207-📞LandlineWSNG236Z13SPOK, INC.N/A
(301) 208-📞LandlineGAITHERSBGVERIZON MARYLAND, INC.N/A
(301) 209-📞LandlineWSHNGTNZN4VERIZON MARYLAND, INC.N/A
(301) 210-📞LandlineLAUREL236VERIZON MARYLAND, INC.N/A
(301) 211-📞LandlineXXXXXXXXXXMULTIPLE OCN LISTINGN/A
(301) 212-📞LandlineWSNGTNZN10VERIZON MARYLAND, INC.N/A
(301) 213-📞LandlineWSHNGTNZN3OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLCN/A
(301) 214-📞LandlineWSHNGTNZN2VERIZON MARYLAND, INC.N/A
(301) 215-📞LandlineWSHNGTNZN2VERIZON MARYLAND, INC.N/A
(301) 216-📞LandlineGAITHERSBGVERIZON MARYLAND, INC.N/A
(301) 217-📞LandlineWSNGTNZN10VERIZON MARYLAND, INC.N/A
(301) 218-📞LandlineWSNG236Z14VERIZON MARYLAND, INC.N/A
(301) 219-📱WirelessWSHNGTNZN2NEW CINGULAR WIRELESS PCS, LLC - DCN/A
(301) 220-📞LandlineWSNG236Z13VERIZON MARYLAND, INC.N/A
(301) 221-📱WirelessWSHNGTNZN2NEW CINGULAR WIRELESS PCS, LLC - DCN/A
(301) 222-📞LandlineWSHNGTNZN2PAETEC ITEL, LLCN/A
(301) 223-📞LandlineWILLIAMSPTVERIZON MARYLAND, INC.N/A
(301) 224-📞LandlineWSHNGTNZN2SPOK, INC.N/A
(301) 225-📞LandlineWSNG236Z14TELEPORT COMMUNICATIONS AMERICA, LLC - DC05/21/2009
(301) 226-📞LandlineWSHNGTNZN4VERIZON MARYLAND, INC.N/A
(301) 227-📞LandlineWSHNGTNZN2VERIZON MARYLAND, INC.N/A
(301) 228-📞LandlineFREDERICKVERIZON MARYLAND, INC.N/A
(301) 229-📞LandlineWSHNGTNZN2VERIZON MARYLAND, INC.N/A
(301) 230-📞LandlineWSNGTNZN11VERIZON MARYLAND, INC.N/A
(301) 231-📞LandlineWSNGTNZN11VERIZON MARYLAND, INC.N/A
(301) 232-📞LandlineASHTON236MCIMETRO ACCESS TRANSMISSION SERVICES LLCN/A
(301) 233-📱WirelessWSHNGTNZN3CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MDN/A
(301) 234-📞LandlineWSNGTNZN16VERIZON MARYLAND, INC.N/A
(301) 235-📞LandlineWSNGTNZN16MCIMETRO ACCESS TRANSMISSION SERVICES LLCN/A
(301) 236-📞LandlineWSNGTNZN12VERIZON MARYLAND, INC.N/A
(301) 237-📞LandlineWSHNGTNZN3OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLCN/A
(301) 238-📞LandlineWSNGTNZN16VERIZON MARYLAND, INC.N/A
(301) 239-📞LandlineWSHNGTNZN4VERIZON MARYLAND, INC.N/A
(301) 240-📞LandlineWSNGTNZN10VERIZON MARYLAND, INC.N/A
(301) 241-📞LandlineHIGHFIELDVERIZON MARYLAND, INC.N/A
(301) 242-📞LandlineBRANDYWINEMCIMETRO ACCESS TRANSMISSION SERVICES LLCN/A
(301) 243-📞LandlineWSHNGTNZN2VERIZON MARYLAND, INC.07/20/2006
(301) 244-📞LandlineWSHNGTNZN3PAETEC ITEL, LLCN/A
(301) 245-📞LandlineBITTINGERVERIZON MARYLAND, INC.N/A
(301) 246-📞LandlineNANJEMOYVERIZON MARYLAND, INC.N/A
(301) 247-📱WirelessLEONARDTNNEW CINGULAR WIRELESS PCS, LLC - DCN/A
(301) 248-📞LandlineWSHNGTNZN6VERIZON MARYLAND, INC.N/A
(301) 249-📞LandlineWSNG236Z14VERIZON MARYLAND, INC.N/A

Frequently Asked Questions about Area Code 301

Where is area code 301 located?

Area code 301 is located in Maryland (United States), serving cities like Frederick, Gaithersburg, Rockville, Bowie, Hagerstown, College Park, Laurel, Greenbelt, Hyattsville, Cumberland.

What timezone is area code 301?

Area code 301 operates in the Eastern timezone.

What state is area code 301?

Area code 301 is assigned to the state / telecom territory of Maryland.

Is area code 301 a scam or dangerous?

Area code 301 is an official geographic area code for Maryland. However, beware of robocaller spoofing.

Maryland State Area Codes

View complete directory of telephone area codes assigned to Maryland.

Explore Maryland Directory

Get a 301 Business Phone Number

How to acquire a virtual phone number or business line with area code 301 for local customer trust in Maryland.

Get 301 Business Number
🛡️ Scam & Safety Directory

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Overlay & Nearby Area Codes for Maryland

Explore neighboring telecom prefixes sharing geographical boundaries with area code 301.

227
Eastern
Area Code 227
Frederick, Gaithersburg, Rockville, Hagerstown, College Park, Laurel, Greenbelt, Hyattsville, Cumberland, Takoma Park
240
Eastern
Area Code 240
Frederick, Gaithersburg, Rockville, Bowie, Hagerstown, College Park, Laurel, Greenbelt, Hyattsville, Cumberland
410
Eastern
Area Code 410
Baltimore, Bowie, Annapolis, Salisbury, Westminster, Aberdeen, Easton, Elkton, Havre De Grace, Cambridge
443
Eastern
Area Code 443
Baltimore, Bowie, Annapolis, Salisbury, Westminster, Aberdeen, Easton, Elkton, Havre De Grace, Cambridge
667
Eastern
Area Code 667
Baltimore, Bowie, Annapolis, Salisbury, Westminster, Aberdeen, Easton, Elkton, Havre De Grace, Cambridge