County record · fips 19061 · Iowa
DubuqueIA
Republican ×3 since 2016all 40 elections, 1868–2024
The Long Record
40 elections against the Iowa and national vote
2024 result
R+8.7
won by Republicans
Record since first cycle
31–9
Dem–Rep two-party wins
Voted with the winner
22/40
55% of its elections
Closest election
1980
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 |
|---|---|---|
| 1916 | -56.3 pts | Republicans |
| 1928 | +51.5 pts | Democrats |
| 1960 | +41.9 pts | Democrats |
| 1912 | +41.7 pts | Democrats |
| 1940 | -35.4 pts | Republicans |
Who Lives Here
Census & ACS county profile, 2024
Population
99,030
College (BA+)
33%
Median income
$77,630
2024 dollars
Non-white
12%
Rural
32%
Age 65+
19%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Jo Daviess, IL · Clayton, IA · Delaware, IA · Jackson, IA · Jones, IA · Grant, WI