Alpine is an unincorporated community and a census-designated place (CDP) located in and governed by Rio Grande County, Colorado, United States.

The population of the Alpine CDP was 169 at the United States Census 2020.

[3] The South Fork post office (Zip Code 81154) serves the area.

[4] Alpine is located about 3 miles (4.8 km) east of South Fork at an elevation of 8,288 feet (2,526 m).

At the 2020 United States Census, the Alpine CDP has an area of 672 acres (2.721 km2), all land.