301 Area Code Data

Area code 301 has a total estimated population of 2,645,522 people and covers the following localities in Maryland:

  • Annapolis
  • Beltsville
  • Bethesda
  • Bittinger
  • Bowie
  • Braddock Heights
  • Brandywine
  • Brunswick
  • Bryans Road
  • Buckeystown
  • Cascade
  • Chevy Chase
  • Clarksville
  • Clear Spring
  • Clinton
  • College Park
  • Columbia
  • Cumberland
  • Damascus
  • Emmitsburg
  • Flintstone
  • Fort Washington
  • Frederick
  • Friendsville
  • Frostburg
  • Gaithersburg
  • Galesville
  • Grantsville
  • Hagerstown
  • Hancock
  • Hollywood
  • Hughesville
  • Hyattsville
  • Indian Head
  • Keedysville
  • Keyser
  • Kitzmiller
  • La Plata
  • Lanham
  • Laurel
  • Leonardtown
  • Lexington Park
  • Lonaconing
  • Mayo
  • Mechanicsville
  • Mount Airy
  • Mount Savage
  • Myersville
  • Nanjemoy
  • New Market
  • Newburg
  • North Beach
  • Oakland
  • Odenton
  • Olney
  • Patuxent River
  • Piedmont
  • Poolesville
  • Prince Frederick
  • Ridge
  • Rockville
  • Silver Spring
  • Smithsburg
  • Suitland
  • Thurmont
  • Upper Marlboro
  • Valley Lee
  • Waldorf
  • Walkersville
  • Washington
  • Williamsport

The (301) area code is comprised of 718 unique phone exchanges: