
Blacklake
- County:
- San Luis Obispo County
- County Seat:
- No
- Area (mi²):
- 1.045
- State:
- California
Blacklake is a CDP located in San Luis Obispo County, California. Blacklake has a 2025 population of 797. Blacklake is currently declining at a rate of -1.12% annually and its population has decreased by 0% since the most recent census, which recorded a population of 797 in 2020.
The average household income in Blacklake is $134,254 with a poverty rate of 0.71%. The median age in Blacklake is 69.3 years: 69.1 years for males, and 69.4 years for females.