Population By Race and Ethnicity in St. Clair County, IL in 2019

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2019, the 259,889 population of St. Clair County, Illinois comprised of 11,270 people who identified as Hispanic (4.34%), and 248,619 people who identified as Non-Hispanic (95.66%).

Race: The White Alone population was the largest racial group in St. Clair County, Illinois with a population of 168,176 (64.71%); Black or African American Alone population was the second largest racial group with a population of 79,581 (30.62%); and Two Or More Races was the third largest racial group with a population of 6,885 (2.65%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in St. Clair County, Illinois in 2019, with a population of 158,899 (61.14%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 78,764 (30.31%); and the third largest ethnic group was White Alone - Hispanic with a population of 9,277 (3.57%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in St. Clair, Illinois.

You can find similar information for other Illinois counties, and for Illinois.

Data Source: US Census Bureau (Vintage).

See this for other years:

Hispanics and Non Hispanics in St. Clair County, IL in 2019

Total Population:259,889

Non Hispanic (95.66%)

Hispanic (4.34%)

Race in St. Clair County, IL in 2019

Total Population:259,889

White Alone (64.71%)

Black or African American Alone (30.62%)

Two or more races (2.65%)

Asian Alone (1.54%)

American Indian and Alaska Native Alone (0.38%)

Native Hawaiian And Pacific Islander Alone (0.1%)

Ethnicity in St. Clair County, IL in 2019

Total Population:259,889

Non-Hispanic White Alone (61.14%)

Non-Hispanic Black or African American Alone (30.31%)

Hispanic White Alone (3.57%)

Non-Hispanic Two or more races (2.39%)

Non-Hispanic Asian Alone (1.49%)

All Other Ethnicities (1.10%)

Population By Race in St. Clair , IL in 2019

Race	Population	Percentage
White Alone	168,176	64.71%
Black or African American Alone	79,581	30.62%
Two Or More Races	6,885	2.65%
Asian Alone	4,010	1.54%
American Indian and Alaska Native Alone	987	0.38%
Native Hawaiian And Pacific Islander Alone	250	0.1%

Population By Ethnicity in St. Clair , IL in 2019

Ethnicity	Population	Percentage
White Alone - Non Hispanic	158,899	61.14%
Black or African American Alone - Non Hispanic	78,764	30.31%
White Alone - Hispanic	9,277	3.57%
Two Or More Races - Non Hispanic	6,219	2.39%
Asian Alone - Non Hispanic	3,872	1.49%
Black or African American Alone - Hispanic	817	0.31%
Two Or More Races - Hispanic	666	0.26%
American Indian and Alaska Native Alone - Non Hispanic	648	0.25%
American Indian and Alaska Native Alone - Hispanic	339	0.13%
Native Hawaiian And Pacific Islander Alone - Non Hispanic	217	0.08%
Asian Alone - Hispanic	138	0.05%
Native Hawaiian And Pacific Islander Alone - Hispanic	33	0.01%