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 | 221,064 | 139,192 | 368,432 | |
| 2020 | D | 258,051 | 135,531 | 401,301 | |
| 2016 | D | 230,851 | 113,789 | 365,856 | |
| 2012 | D | 215,765 | 115,530 | 336,836 | |
| 2008 | D | 237,600 | 111,453 | 352,838 | |
| 2004 | D | 197,132 | 126,159 | 325,356 | |
| 2000 | D | 168,715 | 101,763 | 277,883 | |
| 1996 | D | 145,476 | 77,123 | 241,990 | |
| 1992 | D | 149,535 | 88,513 | 283,808 | |
| 1988 | D | 133,061 | 122,274 | 257,419 | |
| 1984 | R | 129,090 | 142,121 | 272,733 | |
| 1980 | D | 128,469 | 118,757 | 269,343 | |
| 1976 | D | 138,920 | 127,004 | 270,832 | |
| 1972 | R | 118,309 | 152,300 | 272,096 | |
| 1968 | D | 128,414 | 114,769 | 268,667 | |
| 1964 | D | 171,767 | 105,605 | 277,371 | |
| 1960 | D | 152,023 | 123,516 | 276,267 | |
| 1956 | R | 105,683 | 147,111 | 253,393 | |
| 1952 | R | 126,394 | 133,510 | 260,581 | |
| 1948 | D | 128,629 | 111,624 | 241,842 | |
| 1944 | D | 134,449 | 103,804 | 239,000 | |
| 1940 | D | 125,987 | 106,339 | 233,219 | |
| 1936 | D | 133,172 | 79,774 | 219,530 | |
| 1932 | D | 100,877 | 78,807 | 185,516 | |
| 1928 | R | 78,958 | 90,792 | 171,099 | |
| 1924 | R | 23,858 | 77,696 | 124,678 | |
| 1920 | R | 21,594 | 72,205 | 100,186 | |
| 1916 | R | 42,084 | 52,320 | 97,941 | |
| 1912 | O | 14,966 | 9,136 | 49,867 | |
| 1908 | R | 17,535 | 27,644 | 48,614 | |
| 1904 | R | 11,547 | 27,432 | 45,532 | |
| 1900 | R | 21,155 | 24,975 | 47,329 | |
| 1896 | R | 18,047 | 26,201 | 44,862 | |
| 1892 | D | 17,174 | 14,324 | 32,257 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
12.3%
Irish
10.3%
Polish
8.4%
Italian
6.4%
English
4.4%
American
2.3%
French
1.1%
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: 38.5 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
$94,376
Congressional District 1 ranks near the middle of US counties.
Congressional District 1$94,376
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
10.9%
Child poverty is below the national average.
Children under 1814.5%
Working age (18–64)9.7%
Seniors (65+)11.8%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
70.2%
speak English only
Spanish17.5%
Other Indo-European7.0%
Asian & Pacific Islander3.6%
Other languages1.6%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 50.5% of residents not counted as adherents by any reporting body.
Congressional District 1 is a political anchor of the Upper Midwest. Its population of 857,663 and its concentration of urban, diverse, and college-educated voters have made it a Democratic stronghold for decades running.
The Democratic margin in Congressional District 1 has been steady. It reached its modern peak at thirty-six points in 2008; the 2024 margin was twenty-two points, still in line with the county's long pattern.
Congressional District 1's political identity is inseparable from its demographic profile: a 52% non-Hispanic-white share, a median household income of $94,376, and the full diversity of a major metropolitan center.