County record · fips 39113 · Ohio
MontgomeryOH
Democratic ×2 since 2020all 40 elections, 1868–2024
The Long Record
40 elections against the Ohio and national vote
2024 result
D+0.5
won by Democrats
Record since first cycle
25–15
Dem–Rep two-party wins
Voted with the winner
28/40
70% of its elections
Closest election
2024
D+0.5
this countyOhionational (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 | +32.9 pts | Democrats |
| 1932 | +31.8 pts | Democrats |
| 1924 | -30.4 pts | Republicans |
| 1972 | -25.3 pts | Republicans |
| 1936 | +24.2 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
536,096
College (BA+)
31%
Median income
$66,139
2024 dollars
Non-white
32%
Rural
6%
Age 65+
19%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Butler, OH · Clark, OH · Darke, OH · Greene, OH · Miami, OH · Preble, OH · Warren, OH