Boulder, Colorado
Boulder, Colorado, in Boulder County, has ZIP codes 80301, 80302, 80303, 80304, 80305, 80306 and others, and area code 303, with overlays 720 and 983.
- ZIP codes
- 80301, 80302, 80303, 80304 …
- Area codes
- 303, 720, 983
- County
- Boulder County
- State
- Colorado
- Time zone
- Mountain Time
- Coordinates
- 40.0375, -105.3026
ZIP codes in Boulder
| ZIP code | Post office | County | Area codes |
|---|---|---|---|
| 80301 | Boulder | Boulder County | 303, 720, 983 |
| 80302 | Boulder | Boulder County | 303, 720, 983 |
| 80303 | Boulder | Boulder County | 303, 720, 983 |
| 80304 | Boulder | Boulder County | 303, 720, 983 |
| 80305 | Boulder | Boulder County | 303, 720, 983 |
| 80306* | Boulder | Boulder County | 303, 720, 983 |
| 80307* | Boulder | Boulder County | 303, 720, 983 |
| 80308* | Boulder | Boulder County | 303, 720, 983 |
| 80309* | Boulder | Boulder County | 303, 720, 983 |
| 80310 | Boulder | Boulder County | 303, 720, 983 |
| 80314* | Boulder | Boulder County | 303, 720, 983 |
* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.
Area codes for Boulder
- 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
Boulder is in the Mountain Time zone.
Towns near Boulder
- Pine Brook Hill0.4 km (0.2 mi)
- Seven Hills2.4 km (1.5 mi)
- Tall Timber4.7 km (2.9 mi)
- Crisman6 km (3.7 mi)
- Lazy Acres6 km (3.7 mi)
- Sunshine6.4 km (4.0 mi)
- Mountain Meadows7 km (4.3 mi)
- Valmont8.1 km (5.0 mi)
Local numbers in area code 303
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