O'Fallon city, Illinois Citizen Voting-age Population By Race and Ethnicity in 2011 (ACS-5Yrs)

Updated on March 27, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2011, the citizen voting-age population for O'Fallon city, Illinois was 19.31K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (15.42K) and constituted 79.88% of the total.

The Non-Hispanic Black or African American Alone ethnicity group had the second highest citizen voting-age population (2.81K) and constituted 14.56% of the total. The Hispanic or Latino of All Races ethnicity group had the third highest (535), constituting 2.77% of the total citizen voting-age population.

The charts and tables below shows the citizen voting-age population and percentages by race and ethnicity.

You can also see similar information for other Illinois cities and places, and for Illinois.

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

O'Fallon city, Illinois Citizen Voting-age Population By Race and Ethnicity in 2011

Non-Hispanic White Alone

Non-Hispanic Black Alone

Hispanic or Latino of All Races

Non-Hispanic Asian Alone

Non-Hispanic Two Or More Races

Non-Hispanic American Indian & Alaska Native Alone

O'Fallon city, Illinois Citizen Voting-age Population By Race and Ethnicity in 2011

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	15420	79.88
Non-Hispanic Black or African American Alone	2810	14.56
Hispanic or Latino of All Races	535	2.77
Non-Hispanic Asian Alone	265	1.37
Non-Hispanic Two Or More Races	255	1.32
Non-Hispanic American Indian and Alaska Native Alone	25	0.13