Westminster, Colorado

ZIP codes in Westminster

Area codes for Westminster

• 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

Westminster is in the Mountain Time zone.

Towns near Westminster

• Shaw Heights1.4 km (0.9 mi)
• Federal Heights2.9 km (1.8 mi)
• Sherrelwood3 km (1.9 mi)
• Berkley4.3 km (2.7 mi)
• Welby6.1 km (3.8 mi)
• Thornton6.1 km (3.8 mi)
• North Washington6.3 km (3.9 mi)
• Arvada6.5 km (4.0 mi)