County record · fips 24037 · Maryland
St. Mary'sMD
Republican ×12 since 1980all 40 elections, 1868–2024
The Long Record
40 elections against the Maryland and national vote
2024 result
R+17.6
won by Republicans
Record since first cycle
12–28
Dem–Rep two-party wins
Voted with the winner
27/40
68% of its elections
Closest election
1948
D+1.0
this countyMarylandnational (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 |
|---|---|---|
| 1872 | -107.3 pts | Republicans |
| 1976 | +48.9 pts | Democrats |
| 1960 | +41.7 pts | Democrats |
| 1972 | -35.6 pts | Republicans |
| 1916 | +35.0 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
115,126
College (BA+)
36%
Median income
$119,446
2024 dollars
Non-white
30%
Rural
57%
Age 65+
14%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.