Geographic Regions and Area Codes in Area Code 301

Area Code 301 is a significant telephone area code in Maryland, USA. It covers a broad region, including both urban and rural areas. Major cities and communities served by this area code include:

  • Baltimore
  • Germantown
  • Silver Spring
  • Gaithersburg
  • Rockville
  • Bethesda
  • Frederick
  • Hagerstown

The area code also extends to parts of southern Maryland and rural western Maryland. Area Code 301 is overlaid by area codes 240 and 227, making it part of a comprehensive numbering plan for the region.