| Official Name: | Prospect Valley, Colorado |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Weld[1] |
| Unit Pref: | Imperial |
| Timezone: | MST |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Coordinates: | 40.0736°N -104.415°W |
| Elevation M: | 1477 |
| Elevation Ft: | 4846 |
| Postal Code Type: | ZIP code |
| Postal Code: | 80643 (Keenesburg) |
| Blank Name: | GNIS feature ID |
| Blank Info: | 180877 |
Prospect Valley is a populated place in Weld County, Colorado, United States. The Post Office at Keenesburg serves the Prospect Valley postal address.[2] SH 52 runs east and west through the community.
Prospect Valley is located at 40.0736°N -104.415°W (40.0735938, -104.4149556),[3] along State Highway 52, 11 miles east of Keenesburg.