| Official Name: | Mosca, Colorado |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Colorado#USA |
| Pushpin Label Position: | left none |
| Pushpin Map Caption: | Location within the state of ColoradoLocation in Alamosa County and the state of Colorado |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Alamosa |
| Unit Pref: | Imperial |
| Population As Of: | 2020 |
| Population Total: | 1072 |
| Timezone: | MST |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Coordinates: | 37.6481°N -105.875°W |
| Elevation Ft: | 7559 |
| Postal Code Type: | ZIP code |
| Postal Code: | 81146 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 196391 |
Mosca (Spanish for fly) is an unincorporated community and a U.S. Post Office in Alamosa County, Colorado, United States. Mosca's population is 1,072 as of the 2020 census.[1] It was named for the nearby Mosca Pass, which was named for the Spanish explorer, Luis de Moscoso Alvarado.[2] The Mosca Post Office has the ZIP Code 81146.[3] It is best known for its proximity to Great Sand Dunes National Park and Preserve.
The climate in this area is characterized by warm to hot, dry summers, and cold to freezing winters. According to the Köppen Climate Classification system, Mosca has a semi-arid climate, abbreviated "BSk" on climate maps.[4]
Much of the local economy is based on tourism due to the town's proximity with Great Sand Dunes National Park. FairPoint Communications operated the Columbine Telecom Company in the community.[5]
Mosca is served by the Sangre de Cristo School District Re-22J. It is home to Sangre de Cristo Elementary School and Sangre de Cristo Undivided High School.