
Sunnyside
- County:
- Fresno County
- County Seat:
- No
- Area (mi²):
- 1.913
- State:
- California
Sunnyside is a CDP located in Fresno County, California. Sunnyside has a 2025 population of 4,648. Sunnyside is currently growing at a rate of 0.61% annually and its population has increased by 2% since the most recent census, which recorded a population of 4,557 in 2020.
The average household income in Sunnyside is $137,212 with a poverty rate of 8.46%. The median age in Sunnyside is 37.5 years: 34.8 years for males, and 38.8 years for females.