Cities in area code 301
Area code 301 serves 64 localities in Maryland, led by Washington Zone 03, Washington Zone 02, Washington 236 Zone 13. The table lists every rate center — the billing locality each prefix is anchored to — with its share of the code's 784 active prefixes.
Ranked by active prefixes, the code's territory runs through Washington Zone 03, Washington Zone 02, Washington 236 Zone 13, Washington Zone 10, Washington Zone 04, Frederick, Washington Zone 05 and Gaithersburg, and 55 smaller communities down to single-prefix localities.
Metropolitan coverage: 43 rate centers belong to FCC top-100 metro areas.
Overlap note: 64 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Eastern.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Washington Zone 03 | 112 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington Zone 02 | 88 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington 236 Zone 13 | 53 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington Zone 10 | 52 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington Zone 04 | 47 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Frederick | 37 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington Zone 05 | 37 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Gaithersburg | 33 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington Zone 11 | 30 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Waldorf | 25 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington Zone 06 | 23 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Laurel 236 | 23 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington 236 Zone 14 | 21 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Hagerstown | 21 | — | 227, 240, 301 |
| Washington Zone 12 | 15 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Cumberland | 14 | — | 227, 240, 301 |
| Lexington Park Great Mills | 11 | — | 240, 301 |
| Washington 238 Zone 14 | 10 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Washington Zone 16 | 10 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Ashton 236 | 9 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Leonardtown | 9 | — | 227, 240, 301 |
| Myersville | 9 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Oakland | 8 | — | 227, 240, 301 |
| Washington 236 Zone 15 | 7 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Indian Head | 6 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Damascus 236 | 6 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Laurel 238 | 5 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Brandywine | 4 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Washington 238 Zone 15 | 4 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Damascus 240 | 4 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Mechanicsville | 3 | — | 227, 240, 301 |
| La Plata | 3 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Keedysville | 3 | — | 227, 240, 301 |
| Walkersville | 2 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Ashton 238 | 2 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Poolesville | 2 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Kitzmiller | 2 | — | 240, 301 |
| Frostburg | 2 | — | 240, 301 |
| Mount Airy | 2 | Baltimore-Columbia-Towson, MD | 227, 240, 301 |
| Friendsville | 2 | — | 227, 240, 301 |
| Buckeystown | 2 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Brunswick | 2 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Clear Spring | 2 | — | 240, 301 |
| New Market | 2 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Williamsport | 1 | — | 240, 301 |
| Highfield | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Bittinger | 1 | — | 227, 240, 301 |
| Nanjemoy | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Tompkinsville | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Mount Savage | 1 | — | 240, 301 |
| Thurmont | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Hughesville | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Washington 238 Zone 13 | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Westernport | 1 | — | 227, 240, 301 |
| Middletown | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Emmitsburg | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 240, 301 |
| Lonaconing | 1 | — | 240, 301 |
| Flintstone | 1 | — | 227, 240, 301 |
| Hancock | 1 | — | 240, 301 |
| McCoole | 1 | — | 227, 240, 301 |
| Smithsburg | 1 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 227, 240, 301 |
| Ridge | 1 | — | 227, 240, 301 |
| Baltimore | 1 | Baltimore-Columbia-Towson, MD | 301, 410, 443, 667 |
| Grantsville | 1 | — | 227, 240, 301 |
FAQ
What is the biggest city in area code 301?
Washington Zone 03 holds the most active prefixes (112), making it the code's largest numbering locality.
How many places does 301 cover?
64 rate centers in Maryland hold active 301 prefixes, from Washington Zone 03 down to communities with a single prefix.
Does a 301 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.