Spencer County, Indiana: Heartland Swing county. In 2024, voted R+43%. Republican peak: R+43 in 2024.
Key facts
- 2024 presidential margin
- R+43MIT Election Lab
- Political typology
- Heartland SwingAkashic typology
- Population
- 19,9552024 5-year
- Median household income
- $74,5062024 5-year
- White (non-Hispanic)
- 93.7%2024 5-year
- Black
- 0.6%2024 5-year
- Hispanic / Latino
- 3.6%2024 5-year
- Peak Democratic margin
- D+23 in 1912MIT Election Lab
- Peak Republican margin
- R+43 in 2024MIT Election Lab
- Most similar
- Marshall County, IL · similarity 0.99
2024 results by precinct
2024 precinct map of Spencer CountyPrecinct-level 2024 presidential results for Spencer County, with each precinct boundary colored by Democratic-vs-Republican margin.
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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 | +0.3% |
| 1896 | −5.2% |
| 1900 | −2.8% |
| 1904 | −9.3% |
| 1908 | −4.6% |
| 1912 | +22.7% |
| 1916 | −4.4% |
| 1920 | −15.3% |
| 1924 | +0.2% |
| 1928 | −5.9% |
| 1932 | +14.8% |
| 1936 | +4.1% |
| 1940 | −15.0% |
| 1944 | −15.4% |
| 1948 | −3.8% |
| 1952 | −23.4% |
| 1956 | −20.9% |
| 1960 | −8.0% |
| 1964 | +9.7% |
| 1968 | −9.3% |
| 1972 | −17.5% |
| 1976 | +7.0% |
| 1980 | −11.7% |
| 1984 | −18.4% |
| 1988 | −10.0% |
| 1992 | +5.3% |
| 1996 | +3.3% |
| 2000 | −15.0% |
| 2004 | −20.3% |
| 2008 | +0.4% |
| 2012 | −15.3% |
| 2016 | −36.9% |
| 2020 | −38.5% |
| 2024 | −43.2% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 2,853 | 7,364 | 10,442 | ||
| R | 3,213 | 7,357 | 10,769 | ||
| R | 2,861 | 6,572 | 10,048 | ||
| R | 4,026 | 5,515 | 9,744 | ||
| D | 5,039 | 5,001 | 10,181 | ||
| R | 3,920 | 5,934 | 9,924 | ||
| R | 3,752 | 5,096 | 8,987 | ||
| D | 4,058 | 3,770 | 8,620 | ||
| D | 4,301 | 3,789 | 9,579 | ||
| R | 4,061 | 4,964 | 9,055 | ||
| R | 4,005 | 5,816 | 9,846 | ||
| R | 4,153 | 5,284 | 9,705 | ||
| D | 4,796 | 4,166 | 8,990 | ||
| R | 3,867 | 5,518 | 9,415 | ||
| R | 3,767 | 4,603 | 8,993 | ||
| D | 4,834 | 3,980 | 8,834 | ||
| R | 4,303 | 5,050 | 9,373 | ||
| R | 3,530 | 5,404 | 8,960 | ||
| R | 3,401 | 5,497 | 8,941 | ||
| R | 4,163 | 4,496 | 8,726 | ||
| R | 3,647 | 4,986 | 8,686 | ||
| R | 4,180 | 5,667 | 9,889 | ||
| D | 4,966 | 4,567 | 9,676 | ||
| D | 5,422 | 4,014 | 9,503 | ||
| R | 4,152 | 4,672 | 8,844 | ||
| D | 4,409 | 4,395 | 9,045 | ||
| R | 3,855 | 5,270 | 9,240 | ||
| R | 2,335 | 2,560 | 5,085 | ||
| D | 2,428 | 1,268 | 5,112 | ||
| R | 2,662 | 2,920 | 5,666 | ||
| R | 2,495 | 3,017 | 5,632 | ||
| R | 2,816 | 2,979 | 5,893 | ||
| R | 2,745 | 3,047 | 5,822 | ||
| D | 2,496 | 2,478 | 5,167 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
36.1%
English
19.0%
Irish
10.2%
American
6.5%
French
1.9%
Italian
1.4%
Scottish
1.2%
Sample size too small to break out by ancestry reliably.
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
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: 44.4 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
$74,506
Spencer County ranks near the middle of US counties.
Spencer County$74,506
Indiana$71,957
United States$80,734
Spencer County ranks near the middle 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
7.5%
Child poverty is below the national average.
Children under 189.5%
Working age (18–64)6.0%
Seniors (65+)15.4%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
96.5%
speak English only
Spanish2.6%
Other Indo-European0.6%
Asian & Pacific Islander0.2%
Other languages0.1%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 53.6% of residents not counted as adherents by any reporting body.
Spencer County, tucked along the Ohio River in southwestern Indiana, delivers Republican presidential margins exceeding 40 points, reflecting the deep realignment of small-town and agricultural communities that has reshaped the region over the past two decades.
The Democratic margin here peaked at twenty-three points in 1912. Between 2020 and 2024 the county moved five points toward the Republican candidate; the 2024 margin was forty-three points.
A population of 19,955, a 94% non-Hispanic-white share, and a median household income of $74,506 describe the county. The county's voting pattern over the last decade is most similar to that of Marshall County and Schuyler 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.
Spencer County, Indiana. Akashic. https://akashic.app/county/18147/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More heartland swing counties
Frequently asked questions
How did Spencer County, Indiana vote in 2024?
In 2024, Spencer County, Indiana voted Republican by 43.2 points (R+43), carried by the Republican candidate. Out of 10,442 votes cast, 2,853 went Democratic and 7,364 went Republican.
What is Spencer County, Indiana's political typology?
Akashic places Spencer County, Indiana in the "Heartland Swing" typology — Industrial Midwest swing counties drifting steadily toward the Republican Party. 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 24 times, and other 0 times.
When did Spencer County, Indiana last vote Democratic?
The most recent presidential election in which Spencer County, Indiana voted Democratic was 2008.
How many people live in Spencer County, Indiana?
Spencer County, Indiana has a population of 19,955 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Spencer County, Indiana?
Median household income in Spencer County, Indiana is $74,506 — below the national median of $80,734. The Indiana state median is $71,957.
What is the political history of Spencer County, Indiana?
Akashic tracks 38 presidential elections in Spencer County, Indiana from 1876 to 2024. Of those, 10 went Democratic and 24 went Republican. The county's typology — "Heartland Swing" — captures where that record, its demographics, and its recent swing place it among American communities.