R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 3,062,864 | 2,449,079 | 5,633,311 | |
| 2020 | D | 3,471,915 | 2,446,891 | 6,051,510 | |
| 2016 | D | 3,090,729 | 2,146,015 | 5,595,279 | |
| 2012 | D | 3,019,512 | 2,135,216 | 5,251,432 | |
| 2008 | D | 3,419,348 | 2,031,179 | 5,522,371 | |
| 2004 | D | 2,891,550 | 2,345,946 | 5,274,322 | |
| 2000 | D | 2,589,026 | 2,019,421 | 4,742,123 | |
| 1996 | D | 2,341,744 | 1,587,021 | 4,311,391 | |
| 1992 | D | 2,453,350 | 1,734,096 | 5,050,157 | |
| 1988 | R | 2,215,940 | 2,310,939 | 4,559,120 | |
| 1984 | R | 2,086,499 | 2,707,103 | 4,819,088 | |
| 1980 | R | 1,981,413 | 2,358,049 | 4,749,721 | |
| 1976 | R | 2,271,295 | 2,364,269 | 4,718,833 | |
| 1972 | R | 1,913,472 | 2,788,179 | 4,723,236 | |
| 1968 | R | 2,039,814 | 2,174,774 | 4,619,749 | |
| 1964 | D | 2,796,833 | 1,905,946 | 4,702,841 | |
| 1960 | D | 2,377,846 | 2,368,988 | 4,757,409 | |
| 1956 | R | 1,775,682 | 2,623,327 | 4,407,407 | |
| 1952 | R | 2,013,920 | 2,457,327 | 4,481,058 | |
| 1948 | D | 1,994,715 | 1,961,103 | 3,984,046 | |
| 1944 | D | 2,079,479 | 1,939,314 | 4,035,881 | |
| 1940 | D | 2,149,934 | 2,047,240 | 4,217,935 | |
| 1936 | D | 2,282,999 | 1,570,393 | 3,956,522 | |
| 1932 | D | 1,882,304 | 1,432,756 | 3,407,926 | |
| 1928 | R | 1,313,817 | 1,769,141 | 3,107,489 | |
| 1924 | R | 576,975 | 1,453,321 | 2,470,067 | |
| 1920 | R | 534,395 | 1,420,480 | 2,094,714 | |
| 1916 | R | 950,229 | 1,152,549 | 2,190,219 | |
| 1912 | O | 405,048 | 253,593 | 1,146,173 | |
| 1908 | R | 450,810 | 629,932 | 1,155,254 | |
| 1904 | R | 327,606 | 632,645 | 1,076,499 | |
| 1900 | R | 503,061 | 597,985 | 1,131,898 | |
| 1896 | R | 465,613 | 607,130 | 1,090,869 | |
| 1892 | D | 426,280 | 399,288 | 873,557 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
16.1%
Irish
10.6%
English
6.9%
Polish
6.0%
Italian
5.4%
American
3.3%
French
1.2%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 39.1 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$83,390
Illinois ranks near the middle of US counties.
Illinois$83,390
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
11.8%
Children face moderate poverty.
Children under 1815.3%
Working age (18–64)10.9%
Seniors (65+)11.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
75.9%
speak English only
Spanish14.0%
Other Indo-European5.7%
Asian & Pacific Islander3.1%
Other languages1.2%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 49.2% of residents not counted as adherents by any reporting body.
Illinois is a political anchor of the Upper Midwest. Its population of 12,694,798 and its concentration of urban, diverse, and college-educated voters have made it a Democratic stronghold for decades running.
The Democratic margin in Illinois has been steady. It reached its modern peak at twenty-five points in 2008; the 2024 margin was eleven points, still in line with the county's long pattern.
Illinois's political identity is inseparable from its demographic profile: a 61% non-Hispanic-white share, a median household income of $83,390, and the full diversity of a major metropolitan center.