Poolesville, Maryland

ZIP codes in Poolesville

Area codes for Poolesville

• 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

Poolesville is in the Eastern Time zone.

Towns near Poolesville

• Beallsville4.5 km (2.8 mi)
• Dickerson8.3 km (5.2 mi)
• Barnesville9.8 km (6.1 mi)
• Darnestown9.9 km (6.2 mi)
• Boyds11.1 km (6.9 mi)
• Ten Mile Creek13.8 km (8.6 mi)
• Germantown14.3 km (8.9 mi)
• North Potomac15.2 km (9.4 mi)