ZIP Code 80503
Longmont · Boulder, Colorado
80503 is the ZIP code of Longmont in Boulder, Colorado, United States.
- ZIP Code
- 80503
- County
- Boulder
- State
- Colorado
- Country
- United States
Place with ZIP code 80503
| Place | County | Location |
|---|---|---|
| Longmont | Boulder | 40.156, -105.162 |
Near Denver
The nearest major city is Denver, about 49 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 80503?
Longmont.
Which county and state is 80503 in?
Boulder, Colorado, United States.
What is the nearest major city to 80503?
Denver, about 49 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.