Greenville is an unincorporated community in Plumas County, California, United States, on the north-west side of Indian Valley. Most of the buildings were destroyed by the Dixie Fire in August 2021. The population was 1,129 at the 2010 census, down from 1,160 at the 2000 census. For statistical purposes, the United States Census Bureau has defined Greenville as a census-designated place. According to the Census Bureau, the CDP has a total area of 8.0 square miles, all of it land.