
Johnsville
- County:
- Plumas County
- County Seat:
- No
- Area (mi²):
- 13.76
- State:
- California
Johnsville is a CDP located in Plumas County, California. Johnsville has a 2025 population of 43. Johnsville is currently growing at a rate of 22.86% annually and its population has decreased by since the most recent census, which recorded a population of 0 in 2020.
The average household income in Johnsville is $0 with a poverty rate of 0%. The median age in Johnsville is 0 years: 0 years for males, and 0 years for females.