Welby, Colorado

Nearest ZIP codes to Welby

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

Area codes for Welby

• 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

Welby is in the Mountain Time zone.

Towns near Welby

• Thornton3.1 km (1.9 mi)
• Sherrelwood3.2 km (2.0 mi)
• North Washington3.8 km (2.4 mi)
• Dupont4 km (2.5 mi)
• Derby4.2 km (2.6 mi)
• Commerce City4.5 km (2.8 mi)
• Federal Heights5.1 km (3.2 mi)
• Westminster6.1 km (3.8 mi)