Jefferson, Maryland

ZIP codes in Jefferson

Area codes for Jefferson

• Area code 301

  In service since 1947. Shares its area with 227 and 240. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 227

  In service since June 14, 2023. Shares its area with 240 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 240

  In service since June 1, 1997. Shares its area with 227 and 301. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Jefferson is in the Eastern Time zone.

Towns near Jefferson

• Braddock Heights7 km (4.3 mi)
• Rosemont7.6 km (4.7 mi)
• Burkittsville7.8 km (4.8 mi)
• Middletown8.5 km (5.3 mi)
• Brunswick8.7 km (5.4 mi)
• Knoxville9.4 km (5.8 mi)
• Point Of Rocks9.6 km (6.0 mi)
• Brownsville10.1 km (6.3 mi)