to
Update
is a Statutory Town in Rio Grande County, Colorado, United States. The population was 604 at the 2000 census. The Riverbend Resort, 3 miles outside of South Fork, was the setting for "Kamp Komfort" in the 1983 movie National Lampoon's Vacation.
According to the United States Census Bureau, the town has a total area of 2.4 square miles (6.1 km²), all of it land.