Ranking of California Counties By Percentage of Population with Sierra Leonean Ancestry in 2021

Based on the US Census ACS-5Yrs estimates, in 2021, there were 1.71K people in California with Sierra Leonean ancestry (0.004% of California population). Among all California counties, Santa Clara County had the highest percentage of its population with Sierra Leonean ancestry (0.02%), followed by Sonoma County (0.02%), and Alameda County (0.01%).

The chart and table below shows the top 10 counties with high percentage of its population having Sierra Leonean ancestry.

You can see similar information for other states and for other ancestry groups in California.