
Lewiston
- County:
- Trinity County
- County Seat:
- No
- Area (mi²):
- 20.017
- State:
- California
Lewiston is a CDP located in Trinity County, California. Lewiston has a 2025 population of 2,474. Lewiston is currently growing at a rate of 3.56% annually and its population has increased by 67.05% since the most recent census, which recorded a population of 1,481 in 2020.
The average household income in Lewiston is $84,891 with a poverty rate of 17.58%. The median age in Lewiston is 28.7 years: 28.9 years for males, and 28.3 years for females.