County record · fips 19097 · Iowa
JacksonIA
Republican ×3 since 2016all 40 elections, 1868–2024
The Long Record
40 elections against the Iowa and national vote
2024 result
R+33.0
won by Republicans
Record since first cycle
20–20
Dem–Rep two-party wins
Voted with the winner
25/40
63% of its elections
Closest election
1908
D+0.1
this countyIowanational (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 |
|---|---|---|
| 1932 | +39.5 pts | Democrats |
| 1968 | -39.3 pts | Republicans |
| 1916 | -39.0 pts | Republicans |
| 2016 | -37.7 pts | Republicans |
| 1920 | -34.5 pts | Republicans |
Who Lives Here
Census & ACS county profile, 2024
Population
19,390
College (BA+)
20%
Median income
$74,186
2024 dollars
Non-white
6%
Rural
69%
Age 65+
22%
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 · Clinton, IA · Dubuque, IA · Jones, IA