Nassau County, New York: New American county. In 2024, voted R+4%. Republican peak: R+57 in 1920.
Key facts
- 2024 presidential margin
- R+4MIT Election Lab
- Political typology
- New AmericanAkashic typology
- Population
- 1,389,5912024 5-year
- Median household income
- $146,2022024 5-year
- White (non-Hispanic)
- 56.8%2024 5-year
- Black
- 11.2%2024 5-year
- Hispanic / Latino
- 18.7%2024 5-year
- Peak Democratic margin
- D+21 in 1964MIT Election Lab
- Peak Republican margin
- R+57 in 1920MIT Election Lab
- Most similar
- Atlantic County, NJ · similarity 0.95
2024 results by precinct
2024 precinct map of Nassau CountyPrecinct-level 2024 presidential results for Nassau County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | No data |
| 1896 | No data |
| 1900 | −23.3% |
| 1904 | −21.5% |
| 1908 | −31.6% |
| 1912 | +13.3% |
| 1916 | −24.3% |
| 1920 | −56.6% |
| 1924 | −48.4% |
| 1928 | −27.3% |
| 1932 | −11.7% |
| 1936 | −12.0% |
| 1940 | −32.4% |
| 1944 | −34.0% |
| 1948 | −42.9% |
| 1952 | −40.1% |
| 1956 | −38.2% |
| 1960 | −10.4% |
| 1964 | +21.2% |
| 1968 | −8.0% |
| 1972 | −26.8% |
| 1976 | −4.1% |
| 1980 | −21.1% |
| 1984 | −23.9% |
| 1988 | −14.7% |
| 1992 | +5.9% |
| 1996 | +19.6% |
| 2000 | +19.5% |
| 2004 | +5.6% |
| 2008 | +8.4% |
| 2012 | +7.6% |
| 2016 | +6.2% |
| 2020 | +9.5% |
| 2024 | −4.1% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 338,424 | 368,117 | 715,665 | ||
| D | 396,504 | 326,716 | 730,983 | ||
| D | 332,154 | 292,025 | 647,122 | ||
| D | 302,695 | 259,308 | 568,151 | ||
| D | 342,185 | 288,776 | 635,618 | ||
| D | 323,070 | 288,355 | 618,343 | ||
| D | 342,226 | 227,060 | 590,439 | ||
| D | 303,587 | 196,820 | 544,664 | ||
| D | 282,593 | 246,881 | 609,326 | ||
| R | 250,130 | 337,430 | 592,418 | ||
| R | 240,697 | 392,017 | 634,063 | ||
| R | 207,602 | 333,567 | 596,020 | ||
| R | 302,869 | 329,176 | 635,756 | ||
| R | 252,831 | 438,723 | 693,027 | ||
| R | 278,599 | 329,792 | 643,195 | ||
| D | 382,590 | 248,886 | 632,115 | ||
| R | 263,303 | 324,255 | 588,319 | ||
| R | 166,646 | 372,358 | 539,004 | ||
| R | 130,267 | 305,900 | 438,090 | ||
| R | 70,492 | 184,284 | 265,238 | ||
| R | 78,512 | 159,713 | 238,801 | ||
| R | 73,171 | 143,672 | 217,293 | ||
| R | 74,232 | 94,968 | 172,779 | ||
| R | 61,752 | 78,544 | 144,100 | ||
| R | 40,079 | 71,015 | 113,140 | ||
| R | 14,322 | 45,825 | 65,031 | ||
| R | 8,595 | 33,099 | 43,331 | ||
| R | 8,430 | 13,910 | 22,555 | ||
| D | 7,073 | 4,608 | 18,546 | ||
| R | 4,883 | 9,787 | 15,525 | ||
| R | 5,282 | 8,222 | 13,699 | ||
| R | 4,325 | 6,994 | 11,460 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Italian
16.4%
Irish
11.6%
German
6.9%
American
3.7%
Polish
3.5%
English
2.3%
French
0.6%
African American
9.0%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 42.0 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$146,202
Nassau County ranks in the top 0.5% of US counties.
Nassau County$146,202
New York$85,974
United States$80,734
Nassau County ranks in the top 0.5% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
5.4%
Child poverty is below the national average.
Children under 185.7%
Working age (18–64)5.0%
Seniors (65+)8.1%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
69.3%
speak English only
Spanish13.7%
Other Indo-European9.9%
Asian & Pacific Islander5.6%
Other languages1.5%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 35.6% of residents not counted as adherents by any reporting body.
Nassau shifted from a reliable Democratic presidential county to an R+4.2 result in 2024, a roughly 12-point swing over twelve years driven largely by movement among suburban white and Hispanic working-class voters.
Nassau County has leaned Republican in recent presidential elections, reaching a Democratic margin of twenty-one points in 1964. Between 2020 and 2024 it moved fourteen points toward the Republican candidate — part of the sharpest rightward shift recorded among any group of places in the country.
Its demographics describe the shift: a 57% non-Hispanic-white share, a median household income of $146,202, and a population of 1,389,591. The county's voting pattern over the last decade is most similar to that of Atlantic County and Gloucester 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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Nassau County, New York. Akashic. https://akashic.app/county/36059/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Nassau County, New York vote in 2024?
In 2024, Nassau County, New York voted Republican by 4.1 points (R+4), carried by the Republican candidate. Out of 715,665 votes cast, 338,424 went Democratic and 368,117 went Republican.
What is Nassau County, New York's political typology?
Akashic places Nassau County, New York in the "New American" typology — Communities where a large share of households speak a language other than English — multilingual, Democratic-leaning overall, yet the hardest-swinging bloc toward the Republican Party in 2024. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 10 times, Republican 22 times, and other 0 times.
When did Nassau County, New York last vote Democratic?
The most recent presidential election in which Nassau County, New York voted Democratic was 2020.
How many people live in Nassau County, New York?
Nassau County, New York has a population of 1,389,591 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Nassau County, New York?
Median household income in Nassau County, New York is $146,202 — above the national median of $80,734. The New York state median is $85,974.
What is the political history of Nassau County, New York?
Akashic tracks 38 presidential elections in Nassau County, New York from 1876 to 2024. Of those, 10 went Democratic and 22 went Republican. The county's typology — "New American" — captures where that record, its demographics, and its recent swing place it among American communities.