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AREA CODE · MARYLAND

Area code 301

Area code 301 covers Washington, Maryland. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: Maryland Major City: Washington Eastern Time (ET) Overlay: 227/240/301
01 / WHERE IT IS

Where is area code 301?

Area code 301 is assigned to Washington and the surrounding region in Maryland. Calls to numbers that start with 301 are routed to this area.

Area code 301 shares its territory with 227, 240. Because it is an overlay, local calls require dialing all 10 digits.

Counties covered

Montgomery CountyPrince George's CountyFrederick CountyCharles CountyWashington CountySt. Mary's CountyAllegany County

Line types

  • Mobile 18.96%
  • Landline 81.04%
02 / MAP

Area code 301 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Washington

This area code is in the Eastern Time (ET) time zone.

Local timeWashington, MD--:--:--

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America/New_YorkLive
04 / HOW TO DIAL

How to call Washington

WITHIN THE US301 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 301 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 301 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 301 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 301 555 0123
🇦🇺Australia0011 1 301 555 0123
🇯🇵Japan010 1 301 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 301

Share of the number blocks by carrier and line type.

Landline

Verizon
73%
Verizon Business
7%
AT&T
5%
Lumen Technologies
3%
Metro by T-Mobile
2%
Others
10%

Mobile

Verizon Wireless
34%
AT&T Mobility
32%
T-Mobile USA
21%
USA Mobility
7%
USCOC OF CUMBERLAND / UNITED STATES CEL MD
3%
Others
3%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 301

786 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(301) 200 Landline Indian Head BandwidthBANDWIDTH.COM CLEC, LLC - MD
(301) 201 Mobile Washington Zone 10 AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - DC
(301) 202 Mobile Washington Zone 2 AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - DC
(301) 203 Landline Washington Zone 6 VerizonVERIZON MARYLAND, INC.
(301) 204 Mobile Washington Zone 2 AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - DC
(301) 205 Landline Washington Zone 14 (Baltimore LATA) VerizonVERIZON MARYLAND, INC.
(301) 206 Landline Washington Zone 13 VerizonVERIZON MARYLAND, INC.
(301) 207 Mobile Washington Zone 13 USA MobilityUSA MOBILITY WIRELESS, INC.
(301) 208 Landline Gaithersburg VerizonVERIZON MARYLAND, INC.
(301) 209 Landline Washington Zone 4 VerizonVERIZON MARYLAND, INC.

Showing 10 of 786 prefixes

07 / FAQ

Frequently asked questions about area code 301

Where is area code 301 used?
Area code 301 serves Washington and the surrounding area in Maryland, including Montgomery County, Prince George's County, Frederick County, Charles County, Washington County.
What city is area code 301 from?
The main city of area code 301 is Washington, MD.
What time zone is area code 301 in?
Area code 301 is in the Eastern Time (ET) time zone (America/New_York).
Is 301 an overlay area code?
Yes. It shares its territory with 227, 240. In an overlay, every call requires dialing all 10 digits.
How do I call a number with area code 301 from the United States?
Dial the 10 digits: 301 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 301 number from another country?
Dial your country's exit code (or +), then 1, then 301 and the seven-digit number. From a mobile you can use +1 301 XXX XXXX.
Which carriers use area code 301?
Most landline blocks belong to Verizon and most mobile blocks to Verizon Wireless. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 301 for landlines, mobiles or both?
Both. About 81.04% of the number blocks are landline, 18.96% mobile.
How do I save a 301 number in WhatsApp or my phone?
Save it in international format: +1 301 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 301?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

Nearby area codes

202Washington, DC771Washington, DC703Washington, VA571Washington, VA717Lancaster, PA302Wilmington, DE

Other area codes in Maryland

227 · Washington240 · Washington410 · Baltimore443 · Baltimore667 · Baltimore

View all Maryland area codes →