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Area Code 301
Maryland area code 301 has been in service since 1947. It has 629 landlines and 132 wireless prefixes (exchanges) serviced by 35 carriers. It covers 17 counties, 958 ZIP codes, and 187 cities, including Silver Spring, Rockville, Hyattsville, Frederick, Gaithersburg, Bethesda, Hagerstown, Bowie, and Upper Marlboro.
- State:
- Maryland
- Time Zone:
- Eastern (12:35 am)
Area Code (301) has 765 prefixes
| Prefix | County | City | Company/Carrier | Line Type |
|---|---|---|---|---|
| (301) 121- | Montgomery | Bethesda | Unknown | |
| (301) 122- | Montgomery | Bethesda | Unknown | |
| (301) 123- | Montgomery | Bethesda | Unknown | |
| (301) 200- | Rankin | Pelahatchie | Bandwidth.com Clec, Llc - Md | Landline |
| (301) 203- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 204- | Prince Georges | District Heights | New Cingular Wireless Pcs,... | Cell Phone |
| (301) 205- | Anne Arundel | Edgewater | Verizon Maryland, Inc. | Landline |
| (301) 206- | Prince Georges | Laurel | Verizon Maryland, Inc. | Landline |
| (301) 207- | Howard | Savage | Usa Mobility Wireless, Inc. | Cell Phone |
| (301) 208- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 209- | Prince Georges | Hyattsville | Verizon Maryland, Inc. | Landline |
| (301) 210- | Prince Georges | Beltsville | Verizon Maryland, Inc. | Landline |
| (301) 212- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 213- | District Of Columbia | Washington | Sprint Spectrum L.p. | Cell Phone |
| (301) 214- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 215- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 216- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 217- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 218- | Prince Georges | Bowie | Verizon Maryland, Inc. | Landline |
| (301) 219- | Montgomery | Rockville | New Cingular Wireless Pcs,... | Cell Phone |
| (301) 220- | Prince Georges | Greenbelt | Verizon Maryland, Inc. | Landline |
| (301) 221- | Montgomery | Bethesda | New Cingular Wireless Pcs,... | Cell Phone |
| (301) 222- | Montgomery | Bethesda | Cavalier Telephone Mid-atla... | Landline |
| (301) 223- | Washington | Williamsport | Verizon Maryland, Inc. | Landline |
| (301) 225- | Baltimore City | Baltimore | Teleport Communications Gro... | Landline |
| (301) 226- | Prince Georges | College Park | Verizon Maryland, Inc. | Landline |
| (301) 227- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 228- | Frederick | Frederick | Verizon Maryland, Inc. | Landline |
| (301) 229- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 230- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 231- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 232- | Montgomery | Kensington | Mcimetro Access Transmissio... | Landline |
| (301) 233- | Montgomery | Rockville | Cellco Partnership Dba Veri... | Cell Phone |
| (301) 234- | Prince Georges | Clinton | Verizon Maryland, Inc. | Landline |
| (301) 235- | Montgomery | Olney | Mcimetro Access Transmissio... | Landline |
| (301) 236- | Montgomery | Silver Spring | Verizon Maryland, Inc. | Landline |
| (301) 237- | Prince Georges | Bowie | Sprint Spectrum L.p. | Cell Phone |
| (301) 238- | Prince Georges | Suitland | Verizon Maryland, Inc. | Landline |
| (301) 239- | Allegany | Cumberland | Verizon Maryland, Inc. | Landline |
| (301) 240- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 241- | Washington | Cascade | Verizon Maryland, Inc. | Landline |
| (301) 242- | Montgomery | Silver Spring | Mcimetro Access Transmissio... | Landline |
| (301) 243- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 244- | Montgomery | Silver Spring | Telcove Operations, Inc. - Md | Landline |
| (301) 245- | Garrett | Grantsville | Verizon Maryland, Inc. | Landline |
| (301) 246- | Charles | Nanjemoy | Verizon Maryland, Inc. | Landline |
| (301) 247- | Anne Arundel | Laurel | New Cingular Wireless Pcs,... | Cell Phone |
| (301) 248- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 249- | Prince Georges | Bowie | Verizon Maryland, Inc. | Landline |
| (301) 250- | Montgomery | Gaithersburg | Mcimetro Access Transmissio... | Landline |
| (301) 251- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 252- | Montgomery | Silver Spring | Nextel Communications, Inc. | Cell Phone |
| (301) 253- | Montgomery | Damascus | Verizon Maryland, Inc. | Landline |
| (301) 254- | Montgomery | Silver Spring | Sprint Spectrum L.p. | Cell Phone |
| (301) 255- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 256- | Prince Georges | Hyattsville | Mcimetro Access Transmissio... | Landline |
| (301) 257- | Montgomery | Silver Spring | Sprint Spectrum L.p. | Cell Phone |
| (301) 258- | Montgomery | Gaithersburg | Verizon Maryland, Inc. | Landline |
| (301) 259- | Charles | Newburg | Verizon Maryland, Inc. | Landline |
| (301) 260- | Montgomery | Olney | Verizon Maryland, Inc. | Landline |
| (301) 261- | Anne Arundel | Crofton | Verizon Maryland, Inc. | Landline |
| (301) 262- | Prince Georges | Bowie | Verizon Maryland, Inc. | Landline |
| (301) 263- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 264- | Allegany | Mount Savage | Verizon Maryland, Inc. | Landline |
| (301) 265- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 266- | Charles | Waldorf | New Cingular Wireless Pcs,... | Cell Phone |
| (301) 267- | Howard | Savage | Usa Mobility Wireless, Inc. | Cell Phone |
| (301) 268- | Allegany | Cumberland | Uscoc Of Cumberland, Inc. D... | Landline |
| (301) 270- | Montgomery | Takoma Park | Verizon Maryland, Inc. | Landline |
| (301) 271- | Frederick | Thurmont | Verizon Maryland, Inc. | Landline |
| (301) 272- | Montgomery | Bethesda | Mcimetro Access Transmissio... | Landline |
| (301) 273- | Montgomery | Silver Spring | Mcimetro Access Transmissio... | Landline |
| (301) 274- | Charles | Hughesville | Verizon Maryland, Inc. | Landline |
| (301) 275- | Montgomery | Rockville | New Cingular Wireless Pcs,... | Cell Phone |
| (301) 276- | Prince Georges | Hyattsville | Mcimetro Access Transmissio... | Landline |
| (301) 277- | Prince Georges | Hyattsville | Verizon Maryland, Inc. | Landline |
| (301) 278- | Prince Georges | Suitland | Mcimetro Access Transmissio... | Landline |
| (301) 279- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 280- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 281- | District Of Columbia | Washington | Mcimetro Access Transmissio... | Landline |
| (301) 282- | Montgomery | Silver Spring | Verizon Maryland, Inc. | Landline |
| (301) 283- | Prince Georges | Accokeek | Verizon Maryland, Inc. | Landline |
| (301) 284- | Montgomery | Bethesda | Mcimetro Access Transmissio... | Landline |
| (301) 285- | Prince Georges | Capitol Heights | Verizon Maryland, Inc. | Landline |
| (301) 286- | Prince Georges | Greenbelt | Verizon Maryland, Inc. | Landline |
| (301) 287- | Montgomery | Rockville | Mcimetro Access Transmissio... | Landline |
| (301) 288- | Montgomery | Silver Spring | Mcimetro Access Transmissio... | Landline |
| (301) 289- | Prince Georges | Beltsville | Mcimetro Access Transmissio... | Landline |
| (301) 290- | Saint Marys | Mechanicsville | Verizon Maryland, Inc. | Landline |
| (301) 291- | Anne Arundel | Annapolis | Mcimetro Access Transmissio... | Landline |
| (301) 292- | Prince Georges | Fort Washington | Verizon Maryland, Inc. | Landline |
| (301) 293- | Frederick | Myersville | Verizon Maryland, Inc. | Landline |
| (301) 294- | Montgomery | Rockville | Verizon Maryland, Inc. | Landline |
| (301) 295- | Montgomery | Bethesda | Verizon Maryland, Inc. | Landline |
| (301) 296- | Montgomery | Rockville | Mci Worldcom Communications... | Landline |
| (301) 297- | Prince Georges | Clinton | Verizon Maryland, Inc. | Landline |
| (301) 298- | Montgomery | Bethesda | Mcimetro Access Transmissio... | Landline |
| (301) 299- | Montgomery | Potomac | Verizon Maryland, Inc. | Landline |
| (301) 300- | Montgomery | Ashton | Cellco Partnership Dba Veri... | Cell Phone |
| (301) 301- | Dane | Madison | Unknown | Landline |
