Population By Race and Ethnicity in St. Clair County, IL in 2011

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2011, the 270,097 population of St. Clair County, Illinois comprised of 9,250 people who identified as Hispanic (3.43%), and 260,847 people who identified as Non-Hispanic (96.58%).

Race: The White Alone population was the largest racial group in St. Clair County, Illinois with a population of 177,518 (65.72%); Black or African American Alone population was the second largest racial group with a population of 82,460 (30.53%); and Two Or More Races was the third largest racial group with a population of 5,652 (2.09%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in St. Clair County, Illinois in 2011, with a population of 169,843 (62.88%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 81,771 (30.28%); and the third largest ethnic group was White Alone - Hispanic with a population of 7,675 (2.84%).

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 2011

Total Population:270,097

Non Hispanic (96.58%)

Hispanic (3.43%)

Race in St. Clair County, IL in 2011

Total Population:270,097

White Alone (65.72%)

Black or African American Alone (30.53%)

Two or more races (2.09%)

Asian Alone (1.26%)

American Indian and Alaska Native Alone (0.3%)

Native Hawaiian And Pacific Islander Alone (0.09%)

Ethnicity in St. Clair County, IL in 2011

Total Population:270,097

Non-Hispanic White Alone (62.88%)

Non-Hispanic Black or African American Alone (30.28%)

Hispanic White Alone (2.84%)

Non-Hispanic Two or more races (1.92%)

Non-Hispanic Asian Alone (1.22%)

All Other Ethnicities (0.87%)

Population By Race in St. Clair , IL in 2011

Race	Population	Percentage
White Alone	177,518	65.72%
Black or African American Alone	82,460	30.53%
Two Or More Races	5,652	2.09%
Asian Alone	3,411	1.26%
American Indian and Alaska Native Alone	811	0.3%
Native Hawaiian And Pacific Islander Alone	245	0.09%

Population By Ethnicity in St. Clair , IL in 2011

Ethnicity	Population	Percentage
White Alone - Non Hispanic	169,843	62.88%
Black or African American Alone - Non Hispanic	81,771	30.28%
White Alone - Hispanic	7,675	2.84%
Two Or More Races - Non Hispanic	5,181	1.92%
Asian Alone - Non Hispanic	3,287	1.22%
Black or African American Alone - Hispanic	689	0.26%
American Indian and Alaska Native Alone - Non Hispanic	547	0.2%
Two Or More Races - Hispanic	471	0.17%
American Indian and Alaska Native Alone - Hispanic	264	0.1%
Native Hawaiian And Pacific Islander Alone - Non Hispanic	218	0.08%
Asian Alone - Hispanic	124	0.05%
Native Hawaiian And Pacific Islander Alone - Hispanic	27	0.01%