Unauthorized Immigrants in California: Estimates for Counties
Laura E. Hill and Hans P. Johnson

July 2011

Unauthorized immigrants make up 7 percent of California’s total population. But little is known about exactly where they live. This report presents the first authoritative estimates of this group within the state’s regions and counties. It shows the unauthorized living in all parts of California, with Shasta County housing the smallest share and the Monterey/San Benito County region the largest.

This report was supported with funding from the Silicon Valley Community Foundation.