
Kelseyville
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 2.885
- State:
- California
Kelseyville is a CDP located in Lake County, California. Kelseyville has a 2025 population of 3,947. Kelseyville is currently growing at a rate of 1.02% annually and its population has increased by 7.93% since the most recent census, which recorded a population of 3,657 in 2020.
The average household income in Kelseyville is $52,862 with a poverty rate of 22.42%. The median age in Kelseyville is 28.4 years: 26.3 years for males, and 29.8 years for females.