2024 results by precinct
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 251,164 | 191,243 | 456,882 | |
| 2020 | D | 281,222 | 193,611 | 487,763 | |
| 2016 | D | 228,622 | 166,415 | 430,674 | |
| 2012 | D | 199,460 | 195,046 | 401,081 | |
| 2008 | D | 228,698 | 183,626 | 417,973 | |
| 2004 | R | 180,097 | 218,902 | 402,446 | |
| 2000 | R | 152,550 | 201,037 | 364,362 | |
| 1996 | R | 129,709 | 164,630 | 324,486 | |
| 1992 | R | 114,564 | 178,271 | 370,987 | |
| 1988 | R | 94,285 | 217,907 | 314,054 | |
| 1984 | R | 71,430 | 227,141 | 300,215 | |
| 1980 | R | 68,991 | 182,308 | 284,749 | |
| 1976 | R | 72,137 | 175,055 | 254,547 | |
| 1972 | R | 57,043 | 172,341 | 229,739 | |
| 1968 | R | 48,492 | 124,893 | 187,496 | |
| 1964 | R | 66,229 | 98,871 | 165,100 | |
| 1960 | R | 44,263 | 101,014 | 145,445 | |
| 1956 | R | 23,103 | 91,834 | 115,144 | |
| 1952 | R | 22,489 | 71,134 | 93,840 | |
| 1948 | R | 15,528 | 45,794 | 62,238 | |
| 1944 | R | 18,711 | 41,890 | 60,775 | |
| 1940 | R | 18,923 | 40,746 | 60,049 | |
| 1936 | R | 21,684 | 28,380 | 51,632 | |
| 1932 | R | 18,547 | 25,758 | 45,809 | |
| 1928 | R | 10,479 | 28,016 | 38,712 | |
| 1924 | R | 1,893 | 16,917 | 23,233 | |
| 1920 | R | 2,084 | 12,280 | 14,976 | |
| 1916 | R | 4,816 | 9,610 | 15,284 | |
| 1912 | D | 2,236 | 1,136 | 7,961 | |
| 1908 | R | 1,975 | 4,530 | 7,080 | |
| 1904 | R | 1,407 | 4,078 | 5,991 | |
| 1900 | R | 1,947 | 3,869 | 6,053 | |
| 1896 | R | 1,588 | 4,115 | 5,971 | |
| 1892 | R | 2,154 | 2,478 | 4,922 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
American
100.0%
African American
4.0%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 40.2 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
$112,096
DuPage County ranks in the top 0.5% of US counties.
DuPage County$112,096
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
6.6%
Children face moderate poverty.
Children under 1818.0%
Working age (18–64)100.0%
Seniors (65+)18.0%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
0.0%
speak English only
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 36.4% of residents not counted as adherents by any reporting body.
DuPage County, long one of Illinois's most reliably Republican counties, has shifted markedly leftward over the past decade as college-educated suburban voters realigned. In 2024 it delivered a Democratic presidential margin of 13.1 points.
The 2008 election was the turning point, when the Democratic candidate carried the county by eleven points. The 2024 margin was thirteen points, in line with the county's new direction.
The demographics suggest why. A population of 930,024, a 65% non-Hispanic-white share, and a median household income of $112,096 situate the county in the broader realignment patterns of recent cycles. The county's voting pattern over the last decade is most similar to that of Kane County and Charleston County.
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