Northglenn, Colorado

Nearest ZIP codes to Northglenn

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

Area codes for Northglenn

• 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

Northglenn is in the Mountain Time zone.

Towns near Northglenn

• Eastlake2.2 km (1.4 mi)
• Thornton4.9 km (3.0 mi)
• Federal Heights5.9 km (3.7 mi)
• Broomfield7.5 km (4.7 mi)
• Shaw Heights7.7 km (4.8 mi)
• Welby8.1 km (5.0 mi)
• Sherrelwood8.3 km (5.2 mi)
• Westminster8.8 km (5.5 mi)