Silt is a Statutory Town in Garfield County, Colorado, United States. The population was 2,930 at the 2010 census, up from 1,740 at the 2000 census. A post office called "Silt" has been in operation since 1898. The community was named for the silt deposits at the original town site.
Silt is located at 39°32′47″N 107°39′7″W (39.546316, -107.652072), on the north side of the Colorado River about 175 miles (282 km) west of Denver. Interstate 70 passes through the town as it follows the river, with access from Exit 97. Glenwood Springs, the county seat, is 19 miles (31 km) to the east, and Rifle is 7 miles (11 km) to the west. U.S. Route 6 is Main Street in Silt, and provides a local route parallel to I-70.
According to the United States Census Bureau, the town has a total area of 1.5 square miles (3.8 km2), of which 0.023 square miles (0.06 km2), or 1.46%, is water.
This climatic region is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters. According to the Köppen Climate Classification system, Silt has a humid continental climate, abbreviated "Dfb" on climate maps.
As of the census of 2000, there were 1,740 people, 648 households, and 452 families residing in the town. The population density was 616.6 people per square mile (238.2/km2).