County record · fips 10003 · Delaware
New CastleDE
Democratic ×9 since 1992all 40 elections, 1868–2024
The Long Record
40 elections against the Delaware and national vote
2024 result
D+33.1
won by Democrats
Record since first cycle
22–18
Dem–Rep two-party wins
Voted with the winner
31/40
78% of its elections
Closest election
1980
D+0.0
this countyDelawarenational (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 |
|---|---|---|
| 1912 | +29.2 pts | Democrats |
| 1968 | -26.4 pts | Republicans |
| 1932 | +26.3 pts | Democrats |
| 1916 | -26.0 pts | Republicans |
| 1992 | +23.8 pts | Democrats |
Who Lives Here
Census & ACS county profile, 2024
Population
577,961
College (BA+)
40%
Median income
$91,166
2024 dollars
Non-white
48%
Rural
6%
Age 65+
17%
Interpolated between Census/ACS anchors; income CPI-deflated to 2024. Demographics begin in 2000 — earlier cycles have returns only.
Neighbouring counties
Kent, DE · Cecil, MD · Kent, MD · Gloucester, NJ · Salem, NJ · Chester, PA · Delaware, PA