Founded on 1874-02-10, Rio Grande County is one of 64 counties in the state of Colorado. Historically, Rio Grande County was split from Costilla County and Conejos County. The city of Del Norte is the county seat. With FIPS code of 105, Rio Grande County has a population of 11,408 and area of 913.10 square miles (2,365 km2).
List of all cities in Rio Grande County, CO alphabetically
| City/Town | Postal Code | Area Code |
| Alpine, CO | 81154 | 719 |
| Aqua Ramon, CO | 81132 | 719 |
| Baxterville, CO | 81132 | 719 |
| Center, CO | 81125 | 719 |
| Del Norte, CO | 81132 | 719 |
| Freeman, CO | 81132 | 719 |
| Homelake, CO | 81135 | 719 |
| Lariat, CO | 81144 | 719 |
| Masonic Park, CO | 81154 | 719 |
| Maxeyville, CO | 81144 | 719 |
| Monte Vista, CO | 81135 | 719 |
| 81144 | 719 | |
| Plaza, CO | 81132 | 719 |
| Sargents School, CO | 81144 | 719 |
| South Fork, CO | 81154 | 719 |
| Summitville, CO | 81132 | 719 |
| Wagon Wheel Gap, CO | 81154 | 719 |
Map of Cities in Rio Grande County, CO
