St. Clair County, Illinois Population By Race and Ethnicity in 2021 (ACS-5Yrs)
Based on the US Census ACS-5Yrs estimates, in 2021, the total St. Clair County, IL population was 258,597. The White Alone racial group had the highest population (161.90K) and constituted 62.61% of the total St. Clair County population. The Black or African American Alone racial group had the second highest population (75.46K) and constituted 29.18% of the population. The third highest racial group was Two Or More Races (13.06K), constituting 5.05% of the population.
The population of the Non-Hispanic White Alone ethnicity group was 156.75K and constituted 60.62% of the population. The population of the Hispanic or Latino of All Races ethnicity group was (11.25K) and constituted 4.35% of the population.
The charts and tables below shows the population and percentages by race and ethnicity.
Note: Missing racial or ethnicity groups means there was not enough information for an estimate.
You can also see similar information for other Illinois counties, and for Illinois.
| Race | Population | % of Total Pop. |
|---|---|---|
| White Alone | 161899 | 62.61 |
| Black or African American Alone | 75455 | 29.18 |
| Two Or More Races | 13060 | 5.05 |
| Some Other Race Alone | 3915 | 1.51 |
| Asian Alone | 3813 | 1.47 |
| American Indian and Alaska Native Alone | 358 | 0.14 |
| Native Hawaiian And Pacific Islander Alone | 97 | 0.04 |
| Ethnicity | Population | % of Total Pop. |
|---|---|---|
| Non-Hispanic White Alone | 156751 | 60.62 |
| Hispanic or Latino of All Races | 11248 | 4.35 |