
South San Gabriel
- County:
- Los Angeles County
- County Seat:
- No
- Area (mi²):
- 0.834
- State:
- California
South San Gabriel is a CDP located in Los Angeles County, California. South San Gabriel has a 2025 population of 7,715. South San Gabriel is currently declining at a rate of -0.31% annually and its population has decreased by -8.37% since the most recent census, which recorded a population of 8,420 in 2020.
The average household income in South San Gabriel is $93,459 with a poverty rate of 5.42%. The median age in South San Gabriel is 45.2 years: 40.7 years for males, and 49.9 years for females.