Union County, Pennsylvania: Industrial Catholic Metro county. In 2024, voted R+23%. Republican peak: R+76 in 1928.
Key facts
- 2024 presidential margin
- R+23MIT Election Lab
- Political typology
- Industrial Catholic MetroAkashic typology
- Population
- 42,4562024 5-year
- Median household income
- $76,4042024 5-year
- White (non-Hispanic)
- 88.6%2024 5-year
- Black
- 5.9%2024 5-year
- Hispanic / Latino
- 5.1%2024 5-year
- Peak Democratic margin
- D+19 in 1912MIT Election Lab
- Peak Republican margin
- R+76 in 1928MIT Election Lab
- Most similar
- Fauquier County, VA · similarity 1.00
2024 results by precinct
2024 precinct map of Union CountyPrecinct-level 2024 presidential results for Union 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 | −18.6% |
| 1896 | −35.5% |
| 1900 | −34.0% |
| 1904 | −41.2% |
| 1908 | −36.6% |
| 1912 | +18.9% |
| 1916 | −19.2% |
| 1920 | −46.4% |
| 1924 | −48.2% |
| 1928 | −75.7% |
| 1932 | −27.7% |
| 1936 | −30.7% |
| 1940 | −43.2% |
| 1944 | −52.9% |
| 1948 | −54.9% |
| 1952 | −60.5% |
| 1956 | −56.3% |
| 1960 | −57.8% |
| 1964 | −7.4% |
| 1968 | −46.1% |
| 1972 | −49.3% |
| 1976 | −29.3% |
| 1980 | −40.1% |
| 1984 | −47.7% |
| 1988 | −42.6% |
| 1992 | −22.3% |
| 1996 | −24.8% |
| 2000 | −32.7% |
| 2004 | −28.7% |
| 2008 | −14.5% |
| 2012 | −23.2% |
| 2016 | −25.1% |
| 2020 | −24.3% |
| 2024 | −23.3% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 8,015 | 12,969 | 21,257 | ||
| R | 7,475 | 12,356 | 20,115 | ||
| R | 6,180 | 10,622 | 17,696 | ||
| R | 6,109 | 9,896 | 16,337 | ||
| R | 7,333 | 9,859 | 17,400 | ||
| R | 5,700 | 10,334 | 16,123 | ||
| R | 4,209 | 8,523 | 13,175 | ||
| R | 3,658 | 6,570 | 11,724 | ||
| R | 3,623 | 6,362 | 12,265 | ||
| R | 3,163 | 7,912 | 11,136 | ||
| R | 2,747 | 7,792 | 10,579 | ||
| R | 2,687 | 6,798 | 10,256 | ||
| R | 3,405 | 6,309 | 9,902 | ||
| R | 2,278 | 6,905 | 9,385 | ||
| R | 2,178 | 6,422 | 9,215 | ||
| R | 4,262 | 4,944 | 9,216 | ||
| R | 1,993 | 7,466 | 9,472 | ||
| R | 1,844 | 6,620 | 8,478 | ||
| R | 1,610 | 6,558 | 8,181 | ||
| R | 1,442 | 5,058 | 6,587 | ||
| R | 1,704 | 5,585 | 7,330 | ||
| R | 2,220 | 5,612 | 7,857 | ||
| R | 2,946 | 5,589 | 8,602 | ||
| R | 1,948 | 3,534 | 5,734 | ||
| R | 765 | 5,708 | 6,527 | ||
| R | 1,209 | 3,707 | 5,178 | ||
| R | 1,155 | 3,305 | 4,630 | ||
| R | 1,272 | 1,902 | 3,276 | ||
| O | 1,126 | 470 | 3,465 | ||
| R | 1,154 | 2,547 | 3,808 | ||
| R | 1,034 | 2,548 | 3,679 | ||
| R | 1,359 | 2,810 | 4,269 | ||
| R | 1,186 | 2,585 | 3,939 | ||
| R | 1,569 | 2,308 | 3,978 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
29.9%
English
8.7%
Irish
6.9%
Italian
5.0%
American
4.9%
Polish
2.1%
Scottish
1.1%
African American
4.7%
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: 41.0 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
$76,404
Union County ranks in the top 25% of US counties.
Union County$76,404
Pennsylvania$77,971
United States$80,734
Union County ranks in the top 25% 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
9.0%
Child poverty is below the national average.
Children under 1810.3%
Working age (18–64)8.8%
Seniors (65+)7.3%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
89.0%
speak English only
Other Indo-European6.1%
Spanish3.6%
Asian & Pacific Islander0.6%
Other languages0.6%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 65.9% of residents not counted as adherents by any reporting body.
Union County's small population and agricultural economy anchor a reliably conservative electorate; the Republican presidential candidate has carried it by double digits in every contest since 2000, with the margin expanding notably in recent cycles.
Its margins are typically close. The Democratic margin reached nineteen points in 1912; the Republican margin reached seventy-six points in 1928. Between 2020 and 2024 the county moved one point toward the Democratic candidate; the 2024 margin was twenty-three points.
Its demographics sit near national norms: a 89% non-Hispanic-white share, a median household income of $76,404, and a 9% poverty rate. The county's voting pattern over the last decade is most similar to that of Fauquier County and Aiken 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.
Union County, Pennsylvania. Akashic. https://akashic.app/county/42119/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in Pennsylvania
More industrial catholic metro counties
Frequently asked questions
How did Union County, Pennsylvania vote in 2024?
In 2024, Union County, Pennsylvania voted Republican by 23.3 points (R+23), carried by the Republican candidate. Out of 21,257 votes cast, 8,015 went Democratic and 12,969 went Republican.
What is Union County, Pennsylvania's political typology?
Akashic places Union County, Pennsylvania in the "Industrial Catholic Metro" typology — Mid-size industrial metros with Catholic ethnic roots — among the most competitive, swing-prone ground in the country. 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 0 times, Republican 33 times, and other 1 times.
How many people live in Union County, Pennsylvania?
Union County, Pennsylvania has a population of 42,456 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Union County, Pennsylvania?
Median household income in Union County, Pennsylvania is $76,404 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of Union County, Pennsylvania?
Akashic tracks 38 presidential elections in Union County, Pennsylvania from 1876 to 2024. Of those, 0 went Democratic and 33 went Republican. The county's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.