County record · fips 17197 · Illinois
WillIL
Democratic ×5 since 2008all 40 elections, 1868–2024
The Long Record
40 elections against the Illinois and national vote
2024 result
D+1.6
won by Democrats
Record since first cycle
11–29
Dem–Rep two-party wins
Voted with the winner
30/40
75% of its elections
Closest election
1992
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 | +87.4 pts | Democrats |
| 1872 | -81.4 pts | Republicans |
| 1928 | +54.7 pts | Democrats |
| 1912 | +46.3 pts | Democrats |
| 1916 | -44.4 pts | Republicans |
Who Lives Here
Census & ACS county profile, 2024
Population
701,462
College (BA+)
37%
Median income
$109,984
2024 dollars
Non-white
41%
Rural
5%
Age 65+
15%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Cook, IL · DuPage, IL · Grundy, IL · Kankakee, IL · Kendall, IL · Lake, IN