National, Maryland

Nearest ZIP codes to National

These are the ZIP codes nearest to National, each listed with the post office it is named after.

Area codes for National

• 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

National is in the Eastern Time zone.

Towns near National

• Woodland0.9 km (0.6 mi)
• Shaft1.2 km (0.7 mi)
• Ocean1.2 km (0.7 mi)
• Carlos1.9 km (1.2 mi)
• Klondike2 km (1.2 mi)
• Midland2.6 km (1.6 mi)
• Midlothian2.6 km (1.6 mi)
• Vale Summit2.8 km (1.7 mi)