Olney, Maryland

ZIP codes in Olney

Area codes for Olney

• 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

Olney is in the Eastern Time zone.

Towns near Olney

• Sandy Spring3.6 km (2.2 mi)
• Brookeville3.8 km (2.4 mi)
• Leisure World5.5 km (3.4 mi)
• Brinklow5.8 km (3.6 mi)
• Ashton-Sandy Spring6.2 km (3.9 mi)
• Ashton6.8 km (4.2 mi)
• Aspen Hill6.8 km (4.2 mi)
• Redland6.8 km (4.2 mi)