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

Based on the US Census ACS-5Yrs estimates, in 2021, there were 191 people in Illinois with Sierra Leonean ancestry (0.002% of Illinois population). Among all Illinois counties, Champaign County had the highest percentage of its population with Sierra Leonean ancestry (0.01%), followed by Sangamon County (0.01%), and Cook County (0.003%).

The chart and table below shows the top 4 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 Illinois.