Biohazard and Crime Scene Remediation in Johnsville, CA

Johnsville is a census-designated place in Plumas County, a surviving Gold Rush mining town in California's Sierra Nevada.

Johnsville was named for William Johns, the manager of the Plumas-Eureka mine.

Gold was discovered on a quartz ledge high on 7,447-foot Eureka Peak in 1851, and Johnsville and neighboring Jamison City grew up to house the miners who worked the rich Plumas-Eureka and Jamison mines.

The mines around Johnsville produced an estimated $10 million to $20 million in gold before operations wound down around 1943.

Part of the town and its mines became Plumas-Eureka State Park in 1959, a roughly 5,000-acre park that preserves the Mohawk Stamp Mill and a miners' bunkhouse that now serves as the park museum.

Snowed-in Johnsville miners helped pioneer California skiing: the first official longboard ski races were held there in 1861 at what is now the Johnsville Ski Bowl, and the mine tramways are believed to have served as some of the world's first ski lifts.

The 2020 census counted just 22 people in Johnsville, spread over 13.8 square miles, a density of about 1.6 people per square mile.

Johnsville is overwhelmingly a seasonal community: the 2020 census counted 72 housing units, but only 10 were occupied year-round, all by homeowners, while 61 were used seasonally.

Johnsville first appeared as a census-designated place in the 2000 census, and its students attend the Plumas Unified School District.