County record · fips 17043 · Illinois
DuPageIL
Democratic ×5 since 2008all 40 elections, 1868–2024
The Long Record
40 elections against the Illinois and national vote
2024 result
D+13.5
won by Democrats
Record since first cycle
6–34
Dem–Rep two-party wins
Voted with the winner
25/40
63% of its elections
Closest election
2012
D+1.1
this countyIllinoisnational (official)dot colour = two-party winner · hollow = tie or unknown total · click a dot to open that election
The Biggest Swings
Cycle-over-cycle change in the two-party margin, in points
| Election | Swing | Toward |
|---|---|---|
| 1876 | +71.9 pts | Democrats |
| 1912 | +71.9 pts | Democrats |
| 1916 | -65.9 pts | Republicans |
| 1872 | -62.7 pts | Republicans |
| 1896 | -37.7 pts | Republicans |
Who Lives Here
Census & ACS county profile, 2024
Population
930,024
College (BA+)
52%
Median income
$112,096
2024 dollars
Non-white
38%
Rural
0%
Age 65+
17%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.