Folsom
- County:
- Sacramento County
- County Seat:
- No
- Area (mi²):
- 27.881
- State:
- California
Folsom is a city located in Sacramento County, California. Folsom has a 2026 population of 88,091. Folsom is currently growing at a rate of 3.14% annually and its population has increased by 8.94% since the most recent census, which recorded a population of 80,863 in 2020.