301 area code: location, overlays and numbers
In Washington, Maryland, 301 has served as a US telephone area code since 1947. It shares an overlay with 240 and 227.
- Location
- Washington, Maryland
- Serving since
- 1947
- Local time zone
- Eastern time zone
- Local calling
- Full 10-digit dialling
- Local calling areas
- 51
- Expected exhaust
- 2041
- Country calling code
- +1 (United States)
Information comes from NANPA public reports, including the area code report and rate-centre report, with a file dated 11/01/2026. The exhaust year comes from NANPA projections 2026-1 (April 2026). We are not an official NANPA site.
Get your own 301 number
A 301 number comes from two routes. A new number comes with a provider's plan, and at sign-up you choose from the numbers that provider holds in the code. Numbers a seller already has are offered at a one-time price and often follow a pattern. You then transfer your selected number to a provider.
Providers listed by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers listing local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. Referral fees never affect the order, which is based on first-year cost. How we earn
Places in the 301 area code
For 301, NANPA lists 51 rate centres. Each one is a local calling area where numbers get assigned:
Washington 238, Washington 236, Washington, Williamsport, Westernport, Walkersville, Waldorf, Tompkinsville, Thurmont, Smithsburg, Ridge, Poolesville, Oakland, New Market, Nanjemoy, Myersville, Mount Savage, Mount Airy, Middletown, Mechanicsville, Mccoole, Lexington Park Great Mills, Lonaconing, Leonardtown, Laurel 238, Laurel 236, La Plata, Kitzmiller, Keedysville, Indian Head, Hughesville, Highfield, Hancock, Hagerstown, Grantsville, Gaithersburg, Frostburg, Friendsville, Frederick, Flintstone, Emmitsburg, Damascus 240, Damascus 236, Cumberland, Clear Spring, Buckeystown, Brunswick, Brandywine, Ashton 238, Bittinger, Ashton 236.
Other related area codes
One area, one pool of numbers: 240 and 227. Any of these codes can supply a new number in this area, so ask for the one you want.
301 area code questions
What area does area code 301 cover?
In Washington, Maryland, 301 rings around metro Washington-Arlington-Alexandria, DC-VA-MD-WV.
What country code does a 301 number use?
+1. From abroad, call a 301 number by dialing +1 301 and the 7-digit number. It belongs to the North American Numbering Plan.
What time is it in the 301 area code?
301 stays on Eastern time.
Who uses a 301 number to call?
Callers with a number in this code include homes, mobiles, local businesses and people who fake a local number. The 301 number shown on your screen reveals where it was assigned; it does not identify the caller.