County record · fips 19125 · Iowa
MarionIA
Republican ×9 since 1992all 40 elections, 1868–2024
The Long Record
40 elections against the Iowa and national vote
2024 result
R+38.3
won by Republicans
Record since first cycle
14–25
Dem–Rep two-party wins · 1 exact tie
Voted with the winner
30/39
77% of its elections
Closest election
1900
D+0.0
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 |
|---|---|---|
| 1964 | +58.1 pts | Democrats |
| 1932 | +51.8 pts | Democrats |
| 1968 | -45.2 pts | Republicans |
| 1952 | -34.7 pts | Republicans |
| 1912 | +29.2 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
33,642
College (BA+)
32%
Median income
$78,680
2024 dollars
Non-white
7%
Rural
47%
Age 65+
19%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Jasper, IA · Lucas, IA · Mahaska, IA · Monroe, IA · Polk, IA · Warren, IA