County record · fips 25017 · Massachusetts
MiddlesexMA
Democratic ×17 since 1960all 40 elections, 1868–2024
The Long Record
40 elections against the Massachusetts and national vote
2024 result
D+40.4
won by Democrats
Record since first cycle
19–21
Dem–Rep two-party wins
Voted with the winner
24/40
60% of its elections
Closest election
1984
D+0.8
this countyMassachusettsnational (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 |
|---|---|---|
| 1896 | -48.7 pts | Republicans |
| 1960 | +40.8 pts | Democrats |
| 1912 | +39.5 pts | Democrats |
| 1928 | +38.8 pts | Democrats |
| 1964 | +34.8 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
1,638,365
College (BA+)
60%
Median income
$130,847
2024 dollars
Non-white
35%
Rural
4%
Age 65+
16%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Essex, MA · Norfolk, MA · Suffolk, MA · Worcester, MA · Hillsborough, NH