New Castle County, Delaware
AkashicNew Castle County, DEHarrisD+32.6
2024 precinct map of New Castle CountyPrecinct-level 2024 presidential results for New Castle County, with each precinct boundary colored by Democratic-vs-Republican margin, and gold where an independent or third-party candidate carried the precinct.
How it voted
Share of the 2024 vote
| Kamala Harris ✓Democratic | 65.5% | 180,700 |
|---|---|---|
| Donald TrumpRepublican | 32.9% | 90,868 |
| Robert F. Kennedy Jr.Independent Party Of Delaware | 1.6% | 4,349 |
Harris +50Trump +50
311 precincts · 275,917 votes. Hover any precinct for its result.
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1888–2024.
38 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| D | 65.5%Harris180,700 | 32.9%Trump90,868 | 1.6%Kennedy4,349 | 275,917 | ||
| D | 67.8%Biden195,034 | 30.7%Trump88,364 | 1.0%Jorgensen2,953 | 287,633 | ||
| D | 62.3%Clinton162,919 | 32.7%Trump85,525 | 3.7%Johnson9,685 | 261,507 | ||
| D | 66.3%Obama167,082 | 32.2%Romney81,230 | 1.0%G2,486 | 251,996 | ||
| D | 69.7%Obama178,768 | 29.1%McCain74,608 | 1.2%Nader3,041 | 256,417 | ||
| D | 60.5%Kerry146,179 | 38.5%Bush93,079 | 0.9%Nader2,269 | 241,527 | ||
| D | 59.9%Gore127,539 | 36.9%Bush78,587 | 2.7%Nader5,767 | 213,060 | ||
| D | 55.0%Clinton98,837 | 33.9%Dole60,943 | 9.9%Perot17,748 | 179,546 | ||
| D | 46.5%Clinton91,516 | 33.7%Bush66,311 | 19.1%Perot37,581 | 196,817 | ||
| R | 45.7%Dukakis79,147 | 53.5%Bush92,587 | 0.7%Paul1,269 | 173,003 | ||
| R | 42.6%Mondale76,238 | 57.1%Reagan102,322 | 0.3%Dennis517 | 179,077 | ||
| R | 45.7%Carter76,897 | 45.7%Reagan76,898 | 8.7%Anderson14,632 | 168,427 | ||
| D | 51.4%Carter87,521 | 47.0%Ford80,074 | 1.6%Anderson2,743 | 170,338 | ||
| R | 40.6%McGovern70,190 | 58.2%Nixon100,681 | 1.2%Schmitz2,085 | 172,956 | ||
| R | 43.8%Humphrey68,468 | 44.8%Nixon70,014 | 11.5%Wallace17,931 | 156,413 | ||
| D | 62.5%Johnson91,752 | 37.3%Goldwater54,767 | 0.3%Hass374 | 146,893 | ||
| D | 51.3%Kennedy73,364 | 48.5%Nixon69,284 | 0.2%Byrd326 | 142,974 | ||
| R | 44.1%Stevenson56,405 | 55.7%Eisenhower71,133 | 0.2%Andrews275 | 127,813 | ||
| R | 48.1%Stevenson58,387 | 51.6%Eisenhower62,658 | 0.3%Hallinan351 | 121,396 | ||
| D | 49.6%Truman48,117 | 48.9%Dewey47,451 | 1.5%Thurmond1,433 | 97,001 | ||
| D | 56.5%Roosevelt49,588 | 43.1%Dewey37,783 | 0.4%Thomas318 | 87,689 | ||
| D | 55.7%Roosevelt52,167 | 44.3%Willkie41,508 | 0.0% | 93,675 | ||
| D | 55.2%Roosevelt47,315 | 44.1%Landon37,851 | 0.7%Lemke600 | 85,766 | ||
| R | 44.4%Roosevelt32,872 | 53.8%Hoover39,844 | 1.9%Thomas1,393 | 74,109 | ||
| R | 31.9%Smith22,464 | 67.7%Hoover47,641 | 0.4%Thomas307 | 70,412 | ||
| R | 30.8%Davis17,842 | 61.2%Coolidge35,427 | 7.9%La Follette4,582 | 57,851 | ||
| R | 38.6%Cox24,252 | 58.3%Harding36,600 | 3.1%Debs1,939 | 62,791 | ||
| R | 46.6%Wilson14,894 | 50.6%Hughes16,166 | 2.9%Benson916 | 31,976 | ||
| D | 44.3%Wilson13,009 | 28.4%Taft8,340 | 27.3%Roosevelt8,035 | 29,384 | ||
| R | 45.3%Bryan12,964 | 52.3%Taft14,979 | 2.4%Debs701 | 28,644 | ||
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| D | 57.2%Cleveland8,463 | 41.5%Harrison6,130 | 1.3%Fisk192 | 14,785 | ||
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presidential history
Presidential margin, 1888–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1888 | +15.8% |
| 1892 | No data |
| 1896 | No data |
| 1900 | No data |
| 1904 | No data |
| 1908 | −7.0% |
| 1912 | +15.9% |
| 1916 | −4.0% |
| 1920 | −19.7% |
| 1924 | −30.4% |
| 1928 | −35.8% |
| 1932 | −9.4% |
| 1936 | +11.0% |
| 1940 | +11.4% |
| 1944 | +13.5% |
| 1948 | +0.7% |
| 1952 | −3.5% |
| 1956 | −11.5% |
| 1960 | +2.9% |
| 1964 | +25.2% |
| 1968 | −1.0% |
| 1972 | −17.6% |
| 1976 | +4.4% |
| 1980 | −0.0% |
| 1984 | −14.6% |
| 1988 | −7.8% |
| 1992 | +12.8% |
| 1996 | +21.1% |
| 2000 | +23.0% |
| 2004 | +22.0% |
| 2008 | +40.6% |
| 2012 | +34.1% |
| 2016 | +29.6% |
| 2020 | +37.1% |
| 2024 | +32.6% |
DemocraticRepublican
Home to Wilmington and the state's densest urban corridor, New Castle generates enough Democratic margin to effectively determine statewide outcomes on its own, routinely outweighing the two smaller, more competitive downstate counties combined.
Across the recorded series it reached a Democratic high of 40.6 points in 2008 and a Republican high of 35.8 points in 1928. Between 2020 and 2024 the county moved 4.5 points toward the Republican candidate; the 2024 margin was 32.6 points.
A population of 577,961, a 52% non-Hispanic-white share, and a median household income of $91,166 describe the county. The county's voting pattern over the last decade is most similar to that of Ingham County and Onondaga County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
New Castle County, Delaware. Akashic. https://akashic.app/county/10003/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did New Castle County, Delaware vote in 2024?
In 2024, New Castle County, Delaware voted Democratic by 32.6 points (D+32.6), carried by the Democratic candidate. Out of 275,917 votes cast, 180,700 went Democratic and 90,868 went Republican.
When did New Castle County, Delaware last vote Republican?
The most recent presidential election in which New Castle County, Delaware voted Republican was 1988.
How many people live in New Castle County, Delaware?
New Castle County, Delaware has a population of 577,961 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in New Castle County, Delaware?
Median household income in New Castle County, Delaware is $91,166 — above the national median of $80,734. The Delaware state median is $84,954.
What is the political history of New Castle County, Delaware?
Akashic tracks 38 presidential elections in New Castle County, Delaware from 1876 to 2024. Of those, 18 went Democratic and 13 went Republican.