South Yuba City is an unincorporated community and former census-designated place (CDP) in Sutter County, California, United States.

[1] It is part of the Yuba City Metropolitan Statistical Area within the Greater Sacramento CSA.

[2] According to the United States Census Bureau, the CDP has a total area of 3.2 square miles (8.3 km2), all of it land.

In the state legislature, South Yuba City is in the 4th Senate District, represented by Republican Doug LaMalfa, and in the 2nd Assembly District, represented by Republican Jim Nielsen.

Federally, South Yuba City is in California's 3rd congressional district, represented by Republican Kevin Kiley.