County record · fips 19029 · Iowa
CassIA
Republican ×23 since 1936all 40 elections, 1868–2024
The Long Record
40 elections against the Iowa and national vote
2024 result
R+41.4
won by Republicans
Record since first cycle
1–39
Dem–Rep two-party wins
Voted with the winner
24/40
60% of its elections
Closest election
1932
D+1.4
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 | +41.2 pts | Democrats |
| 1968 | -39.8 pts | Republicans |
| 1920 | -38.4 pts | Republicans |
| 1872 | -36.7 pts | Republicans |
| 1964 | +32.4 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
13,096
College (BA+)
22%
Median income
$63,013
2024 dollars
Non-white
7%
Rural
50%
Age 65+
23%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Adair, IA · Adams, IA · Audubon, IA · Montgomery, IA · Pottawattamie, IA · Shelby, IA