ZIP Code 80109
Castle Rock · Douglas, Colorado
80109 is the ZIP code of Castle Rock in Douglas, Colorado, United States.
- ZIP Code
- 80109
- County
- Douglas
- State
- Colorado
- Country
- United States
Place with ZIP code 80109
| Place | County | Location |
|---|---|---|
| Castle Rock | Douglas | 39.364, -104.901 |
Near Denver
The nearest major city is Denver, about 42 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 80109?
Castle Rock.
Which county and state is 80109 in?
Douglas, Colorado, United States.
What is the nearest major city to 80109?
Denver, about 42 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.