County record · fips 17103 · Illinois
LeeIL
Republican ×28 since 1916all 40 elections, 1868–2024
The Long Record
40 elections against the Illinois and national vote
2024 result
R+22.6
won by Republicans
Record since first cycle
1–39
Dem–Rep two-party wins
Voted with the winner
24/40
60% of its elections
Closest election
2008
R+3.1
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 | +73.0 pts | Democrats |
| 1872 | -59.5 pts | Republicans |
| 1912 | +47.7 pts | Democrats |
| 1916 | -47.0 pts | Republicans |
| 1980 | -38.8 pts | Republicans |
Who Lives Here
Census & ACS county profile, 2024
Population
33,869
College (BA+)
19%
Median income
$70,292
2024 dollars
Non-white
17%
Rural
53%
Age 65+
21%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Bureau, IL · DeKalb, IL · LaSalle, IL · Ogle, IL · Whiteside, IL