Jamestown is a census-designated place (CDP) in Tuolumne County, California, United States. The population was 3,433 at the 2010 census, up from 3,017 at the 2000 census.
A scene from the movie Hidalgo was filmed in Jamestown. Exterior scenes from the TV series Petticoat Junction and Green Acres were filmed in and near Jamestown.
Jamestown is located at 37°57′18″N 120°24′19″W / 37.954956°N 120.405306°W / 37.954956; -120.405306.