County record · fips 19153 · Iowa
PolkIA
Democratic ×11 since 1984all 40 elections, 1868–2024
The Long Record
40 elections against the Iowa and national vote
2024 result
D+11.0
won by Democrats
Record since first cycle
20–20
Dem–Rep two-party wins
Voted with the winner
29/40
73% of its elections
Closest election
1968
D+0.9
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 |
|---|---|---|
| 1912 | +44.2 pts | Democrats |
| 1920 | -42.2 pts | Republicans |
| 1908 | +41.5 pts | Democrats |
| 1964 | +40.7 pts | Democrats |
| 1928 | +33.4 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
503,175
College (BA+)
40%
Median income
$83,576
2024 dollars
Non-white
27%
Rural
4%
Age 65+
14%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Boone, IA · Dallas, IA · Jasper, IA · Marion, IA · Story, IA · Warren, IA