About This Place
Lewiston is a census-designated place (CDP) in Trinity County, California, United States. The population was 1,193 at the 2010 census, down from 1,305 at the 2000 census.
Lewiston is located at 40°41′57″N 122°48′38″W / 40.69917°N 122.81056°W / 40.69917; -122.81056 (40.699213, -122.810684).
According to the United States Census Bureau, the CDP has a total area of 51.8 square kilometers (20.0 sq mi), all land.