County record · fips 17089 · Illinois
KaneIL
Democratic ×5 since 2008all 40 elections, 1868–2024
The Long Record
40 elections against the Illinois and national vote
2024 result
D+9.5
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 |
|---|---|---|
| 1912 | +78.7 pts | Democrats |
| 1916 | -70.5 pts | Republicans |
| 1876 | +68.3 pts | Democrats |
| 1872 | -48.5 pts | Republicans |
| 1928 | +40.1 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
517,255
College (BA+)
38%
Median income
$103,163
2024 dollars
Non-white
46%
Rural
4%
Age 65+
16%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Cook, IL · DeKalb, IL · DuPage, IL · Kendall, IL · McHenry, IL