Riverton is a city in Salt Lake County, Utah, United States. It is part of the Salt Lake City, Utah Metropolitan Statistical Area. The population was 25,011 at the 2000 census, and 39,751 as of the 2008 estimates. Riverton is one of the fastest-growing cities in the state of Utah, and was ranked by CNN Money Magazine as the 60th best place to live in the U.S. in 2005.