Greenville (Northeast Maidu: Kotassi)[2] is an unincorporated community in Plumas County, California, United States, on the north-west side of Indian Valley.

For statistical purposes, the United States Census Bureau has defined Greenville as a census-designated place (CDP).

According to the Census Bureau, the CDP has a total area of 8.0 square miles (21 km2), all of it land.

The Maidu people had been living in the valley area around present-day Greenville for centuries when English-speaking settlers arrived in the 1850s during the Gold Rush.

[3] Among the earliest structures built in the community was a boarding house operated by Mr. and Mrs. Green.

The community was named for Green, who was killed in the collapse of the first Round Valley Dam.

When Henry C. Bidwell arrived in 1862 and opened a trading post, several business owners moved down from Round Valley to Greenville.

[5] In the late 1800s, the Maidu tribe were granted over 200 acres of land by the US government where a boarding school was built which burned down in the 1920s.

[4] On August 4, 2021, about 75 percent of Greenville's buildings were destroyed by the Dixie Fire,[7][8][9] the largest single (i.e. non-complex) wildfire in the state's history, and the second-largest overall (after the August Complex fire of 2020).

[12] The Los Angeles Times estimated that about $1 billion, through government aid, insurance payouts, lawsuits against Pacific Gas & Electric, corporate investment and philanthropic donations, has been promised, paid or will be forced to pay for the damage and rebuilding of Greenville.

For statistical purposes, the United States Census Bureau has defined Greenville as a census-designated place (CDP).

[20] Federally, Greenville is in California's 1st congressional district, represented by Republican Doug LaMalfa.