County record · fips 17015 · Illinois
CarrollIL
Republican ×3 since 2016all 40 elections, 1868–2024
The Long Record
40 elections against the Illinois and national vote
2024 result
R+32.3
won by Republicans
Record since first cycle
2–38
Dem–Rep two-party wins
Voted with the winner
25/40
63% of its elections
Closest election
2012
D+1.5
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 | +57.9 pts | Democrats |
| 1872 | -45.4 pts | Republicans |
| 1932 | +44.5 pts | Democrats |
| 1920 | -40.2 pts | Republicans |
| 2016 | -30.4 pts | Republicans |
Who Lives Here
Census & ACS county profile, 2024
Population
15,576
College (BA+)
18%
Median income
$60,758
2024 dollars
Non-white
12%
Rural
100%
Age 65+
24%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Jo Daviess, IL · Ogle, IL · Stephenson, IL · Whiteside, IL · Clinton, IA · Jackson, IA