New Castle County, DE

DE · Presidential Elections 1908–2024

D+32.4
2024 Margin
R+4.6%
2020→2024 Swing
D since 1992
Voting Streak
578K
Population

New Castle County, DE (Delaware) voted D+32.4 for Kamala Harris (Democrat) in the 2024 presidential election, with Harris receiving 180,700 votes (65.27%) to 90,868 (32.82%) for Trump.

This represents a R+4.6% swing toward Republicans compared to 2020. New Castle County is classified as a deep Democratic county. New Castle County has voted Democratic in every presidential election since 1992. The county has a population of approximately 577,961.

Quick Stats

2024 ResultD+32.4
2020→2024 SwingR+4.6%
Voting StreakD since 1992
Elections on Record30

Demographics

Population577,961
Median Age
39.3(US: 38.7)
College (BA+)
39.7%(US: 35.2%)
Median Income
$91,166(US: $80k)
White (non-Hisp)
53.5%(US: 57.6%)
Hispanic
11.8%(US: 19.1%)
Black
25.7%(US: 12.2%)
Asian
5.8%(US: 5.7%)
Homeownership
69.0%(US: 64.5%)
Poverty Rate
10.1%(US: 12.3%)
Veterans
5.8%(US: 6.2%)
Non-English (CVAP)
10.9%(US: 17.0%)
Source: Census ACS 5-Year (2020-2024)

Community Profile

Religious Composition

Source: Religion Census 2020
Catholic
25.6%
Evangelical
8.0%(Below Average)
Mainline Protestant
5.7%
Black Protestant
1.7%
LDS/Mormon
0.6%
+ 1 more traditions

Ancestry Groups

Source: Census ACS

Top reported ancestry groups (compared to national average).

Irish
14.8%(1.6x)
German
11.7%
Italian
9.6%Above Average(2.0x)
English
9.3%
Polish
4.5%Above Average(1.8x)
Mexican
4.4%
+ 5 more reported ancestry groups

Age Distribution

Median:39.3 yrs(US: 38.5)
Under 18
21.2%
18-29
9.1%↓
30-44
20.6%
45-64
32.1%↑
65+
17.1%
National average

Employment by Industry

Census ACS
Professional & Technical
12.4%
Retail Trade
10.8%
Educational Services
7.7%(0.9x US)
Manufacturing
7.1%(0.7x US)
Construction
5.9%(0.9x US)
Healthcare & Social Services
3.8%(0.8x US)
National average
+ 1 more sectors

Presidential Elections

Presidential Results

YearDemocratRepublicanMarginSwing
202465.3%(180,700)32.8%(90,868)D+32.4R+4.6
202067.8%(195,034)30.7%(88,364)D+37.1D+7.5
201662.3%(162,919)32.7%(85,525)D+29.6R+4.5
201266.3%(167,082)32.2%(81,230)D+34.1R+6.6
200869.7%(178,768)29.1%(74,608)D+40.6D+18.6
200460.5%(146,179)38.5%(93,079)D+22.0R+1.0
200059.9%(127,539)36.9%(78,587)D+23.0D+1.9
199655.0%(98,837)33.9%(60,943)D+21.1D+8.3
199246.5%(91,516)33.7%(66,311)D+12.8D+20.6
198845.8%(79,147)53.5%(92,587)R+7.8D+6.8

Source: Official state election returns via MIT Election Data + Science Lab

Presidential Margin Trend

New Castle County, DE • 1908–2024

D+R++40+200-20-40190819161924193219401948195619641972198019881996200420122020
Democratic margin
Republican margin

Senate Elections

Senate Results

YearDemocratRepublicanMarginSwing
202465.3%(176,195)30.5%(82,475)D+34.7R+5.3
202068.6%(191,774)28.7%(80,081)D+40.0R+0.9
201869.1%(145,428)28.3%(59,526)D+40.8D+11.0
201463.8%(84,985)34.0%(45,229)D+29.9R+19.8
201273.0%(177,244)23.3%(56,666)D+49.7D+14.4
201066.1%(123,678)30.8%(57,649)D+35.3R+8.3
200871.8%(177,070)28.2%(69,491)D+43.6R+4.1
200672.6%(115,769)24.9%(39,655)D+47.7D+20.6
200263.0%(91,516)35.9%(52,133)D+27.1D+6.1
200060.1%(128,491)39.1%(83,554)D+21.0R+6.3

Source: Official state election returns via MIT Election Data + Science Lab

Governor Elections

Governor Results

YearDemocratRepublicanMarginSwing
202464.3%(172,412)35.7%(95,746)D+28.6R+10.4
202068.4%(191,678)29.5%(82,545)D+39.0D+3.8
201666.2%(165,973)31.1%(77,839)D+35.2R+18.7
201275.9%(183,858)22.1%(53,510)D+53.8D+5.5
200873.9%(180,240)25.6%(62,432)D+48.3D+35.7
200455.3%(129,092)42.6%(99,586)D+12.6R+9.1
200060.3%(127,112)38.5%(81,311)D+21.7R+22.5
199672.1%(129,512)27.9%(50,081)D+44.2D+9.2
199266.2%(124,601)31.1%(58,609)D+35.1D+75.1
198830.0%(49,630)70.0%(115,866)R+40.0R+31.0

Source: Official state election returns via MIT Election Data + Science Lab

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