County record · fips 30111 · Montana
YellowstoneMT
Republican ×15 since 1968reported 1892–2024 · 34 elections
The Long Record
34 elections against the Montana and national vote
2024 result
R+28.0
won by Republicans
Record since first cycle
7–27
Dem–Rep two-party wins
Voted with the winner
23/34
68% of its elections
Closest election
1948
R+3.1
this countyMontananational (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 |
|---|---|---|
| 1920 | -46.8 pts | Republicans |
| 1932 | +40.1 pts | Democrats |
| 1904 | -35.4 pts | Republicans |
| 1912 | +32.2 pts | Democrats |
| 1968 | -31.7 pts | Republicans |
Who Lives Here
Census & ACS county profile, 2024
Population
168,957
College (BA+)
34%
Median income
$76,570
2024 dollars
Non-white
17%
Rural
16%
Age 65+
18%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Big Horn, MT · Carbon, MT · Golden Valley, MT · Musselshell, MT · Rosebud, MT · Stillwater, MT · Treasure, MT