County record · fips 42045 · Pennsylvania
DelawarePA
Democratic ×9 since 1992all 40 elections, 1868–2024
The Long Record
40 elections against the Pennsylvania and national vote
2024 result
D+24.0
won by Democrats
Record since first cycle
10–30
Dem–Rep two-party wins
Voted with the winner
25/40
63% of its elections
Closest election
1992
D+1.2
this countyPennsylvanianational (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 | -33.9 pts | Republicans |
| 1936 | +32.8 pts | Democrats |
| 1876 | +31.2 pts | Democrats |
| 1896 | -29.5 pts | Republicans |
| 1912 | +28.5 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
579,222
College (BA+)
42%
Median income
$89,546
2024 dollars
Non-white
38%
Rural
1%
Age 65+
17%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
New Castle, DE · Gloucester, NJ · Chester, PA · Montgomery, PA · Philadelphia, PA