What County Is Boulder, Colorado In?
Boulder is in Boulder County, Colorado.
- Official code
- 0807850
- Representative coordinates
- 40.024431, -105.251251
- Land area
- 69.737 km²
- Water area
- 2.724 km²
- State
- Colorado
The representative point identifies this area. It is not a street address or a boundary survey.
County boundaries in Boulder
For a point close to the city or county boundary, check the address with the office responsible for your form. Check a point on the county map.
Coordinates of Boulder
40.024431, -105.251251 is the Census representative point, not a street address. Convert these coordinates or prepare a map link.
Elevation in Boulder
1,606 m · 5,269 ft. GNIS archived height at its named reference point (40.0248074, -105.2524179), which may differ from the Census point. Terrain height varies across the place; this is not a city-wide or surveyed elevation. Request height at a different point.
Today’s sunrise and sunset
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Approximate calculations at the representative coordinates, using a level horizon. Terrain and weather can change what you see.
Time zones in Boulder
The representative point uses America/Denver.
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Denver | UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
80301 · 80302 · 80303 · 80304 · 80305 · 80310 · 80503
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
A city boundary, a CDP and a mailing city can mean different things.
Find the county at your current point, check its ZIP area, or find its physical time zone.