County record · fips 17177 · Illinois
StephensonIL
Republican ×4 since 2012all 40 elections, 1868–2024
The Long Record
40 elections against the Illinois and national vote
2024 result
R+19.7
won by Republicans
Record since first cycle
6–34
Dem–Rep two-party wins
Voted with the winner
29/40
73% of its elections
Closest election
1888
R+0.8
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 | +91.4 pts | Democrats |
| 1872 | -83.8 pts | Republicans |
| 1916 | -70.0 pts | Republicans |
| 1912 | +53.7 pts | Democrats |
| 1932 | +45.5 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
43,768
College (BA+)
21%
Median income
$64,043
2024 dollars
Non-white
21%
Rural
46%
Age 65+
24%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Carroll, IL · Jo Daviess, IL · Ogle, IL · Winnebago, IL · Green, WI · Lafayette, WI