Illinois White Alone Voting-age Population By County in Census 2020

Updated on August 25, 2023.

According to the data from the US 2020 decennial Census, as at April 2020, among all the Illinois voting-age population (18 years and over), there were 6,382,030 people who identified their race as White Alone, which is 63.82% of the total voting-age population of Illinois.

Cook County had the highest number of White Alone voting-age population (1,958,920), followed by DuPage County (498,909), and Will County (349,074).

On the other hand, the three counties with low number of White Alone voting-age population were: Pulaski County (2,611), Alexander County (2,746), and Hardin County (2,835).

In terms of the percentage of each county's voting-age population, Jasper County had the highest percentage, with 96.85% of its voting-age population identifying their race as White Alone, followed by Scott County (96.84%), and Edwards County (96.82%).

You can see similar information for other states and also for the United States by state. You can also see similar information for other racial groups as well as the different ethnicities in Illinois.

Hover over or click on the counties to see the number and percentage of each county's voting-age population that identified as White Alone. The data can also be filtered, sorted, and explored further in a table below.

Illinois White Alone Voting-age Population By County in Census 2020
Illinois White Alone Voting-age Population By County in Census 2020
County
White Alone Voting-age Population
% of County Voting-age Population
Cook County 1,958,920 46.95
DuPage County 498,909 68.88
Will County 349,074 66.35
Lake County 348,907 64.13
Kane County 246,622 63.43
McHenry County 196,954 82.45
Madison County 174,489 83.43
Winnebago County 157,081 71.39
Sangamon County 123,653 80.72
St. Clair County 123,608 62.72
Champaign County 108,165 65.00
McLean County 106,946 79.73
Peoria County 100,261 71.78
Tazewell County 94,803 93.34
Rock Island County 84,882 75.32
LaSalle County 75,667 87.46
Kendall County 66,863 71.17
Macon County 62,100 76.70
Kankakee County 61,498 74.14
DeKalb County 59,817 76.81
Williamson County 46,854 89.19
Adams County 46,643 91.40
Vermilion County 46,063 80.51
Whiteside County 38,266 87.73
Ogle County 35,269 88.21
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