Derby, Colorado

Nearest ZIP codes to Derby

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

Area codes for Derby

• Area code 303

  In service since 1947. Shares its area with 720 and 983. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 720

  In service since June 1, 1998. Shares its area with 303 and 983. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 983

  In service since June 17, 2022. Shares its area with 303 and 720. 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

Derby is in the Mountain Time zone.

Towns near Derby

• Dupont0.5 km (0.3 mi)
• Commerce City2.7 km (1.7 mi)
• Welby4.2 km (2.6 mi)
• Thornton5.6 km (3.5 mi)
• North Washington6.6 km (4.1 mi)
• Sherrelwood7.4 km (4.6 mi)
• Henderson7.4 km (4.6 mi)
• Federal Heights8.9 km (5.5 mi)