Riderwood, Maryland

ZIP codes in Riderwood

Area codes for Riderwood

• Area code 410

  In service since October 6, 1991. Shares its area with 443 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 443

  In service since June 1, 1997. Shares its area with 410 and 667. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 667

  In service since March 24, 2012. Shares its area with 410 and 443. 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

Riderwood is in the Eastern Time zone.

Towns near Riderwood

• Brooklandville2.4 km (1.5 mi)
• Lutherville3.1 km (1.9 mi)
• Lutherville Timonium3.7 km (2.3 mi)
• Mays Chapel3.8 km (2.4 mi)
• Towson4.4 km (2.7 mi)
• Stevenson5.5 km (3.4 mi)
• Timonium5.8 km (3.6 mi)
• Hampton7.3 km (4.5 mi)