Jennings County, Indiana: Heartland Swing county. In 2024, voted R+59%. Republican peak: R+59 in 2024.
Key facts
- 2024 presidential margin
- R+59MIT Election Lab
- Political typology
- Heartland SwingAkashic typology
- Population
- 27,5622024 5-year
- Median household income
- $69,3222024 5-year
- White (non-Hispanic)
- 93.4%2024 5-year
- Black
- 0.3%2024 5-year
- Hispanic / Latino
- 3.5%2024 5-year
- Peak Democratic margin
- D+18 in 1912MIT Election Lab
- Peak Republican margin
- R+59 in 2024MIT Election Lab
- Most similar
- Jay County, IN · similarity 1.00
2024 results by precinct
2024 precinct map of Jennings CountyPrecinct-level 2024 presidential results for Jennings 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 | −11.2% |
| 1896 | −4.8% |
| 1900 | −5.5% |
| 1904 | −11.4% |
| 1908 | −5.6% |
| 1912 | +17.6% |
| 1916 | −2.9% |
| 1920 | −13.1% |
| 1924 | −12.0% |
| 1928 | −21.9% |
| 1932 | +8.7% |
| 1936 | −6.4% |
| 1940 | −13.4% |
| 1944 | −17.8% |
| 1948 | −6.0% |
| 1952 | −23.1% |
| 1956 | −21.9% |
| 1960 | −13.6% |
| 1964 | +10.7% |
| 1968 | −16.4% |
| 1972 | −27.6% |
| 1976 | −0.8% |
| 1980 | −16.0% |
| 1984 | −31.9% |
| 1988 | −21.1% |
| 1992 | −8.9% |
| 1996 | −2.3% |
| 2000 | −23.0% |
| 2004 | −31.6% |
| 2008 | −8.0% |
| 2012 | −22.4% |
| 2016 | −52.2% |
| 2020 | −56.9% |
| 2024 | −58.8% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 2,328 | 9,273 | 11,809 | ||
| R | 2,523 | 9,490 | 12,251 | ||
| R | 2,364 | 8,222 | 11,229 | ||
| R | 3,821 | 6,120 | 10,250 | ||
| R | 5,312 | 6,261 | 11,839 | ||
| R | 3,538 | 6,864 | 10,517 | ||
| R | 3,549 | 5,732 | 9,494 | ||
| R | 4,223 | 4,461 | 10,420 | ||
| R | 3,471 | 4,392 | 10,295 | ||
| R | 3,667 | 5,636 | 9,348 | ||
| R | 3,264 | 6,356 | 9,707 | ||
| R | 3,931 | 5,498 | 9,822 | ||
| R | 4,430 | 4,505 | 9,012 | ||
| R | 2,903 | 5,156 | 8,157 | ||
| R | 2,996 | 4,416 | 8,640 | ||
| D | 4,307 | 3,469 | 7,811 | ||
| R | 3,403 | 4,478 | 7,908 | ||
| R | 2,879 | 4,502 | 7,414 | ||
| R | 2,777 | 4,460 | 7,286 | ||
| R | 3,084 | 3,485 | 6,636 | ||
| R | 2,537 | 3,643 | 6,219 | ||
| R | 2,989 | 3,921 | 6,939 | ||
| R | 3,157 | 3,594 | 6,823 | ||
| D | 3,603 | 3,020 | 6,717 | ||
| R | 2,369 | 3,705 | 6,098 | ||
| R | 2,730 | 3,506 | 6,444 | ||
| R | 2,603 | 3,404 | 6,117 | ||
| R | 1,686 | 1,791 | 3,581 | ||
| D | 1,577 | 955 | 3,529 | ||
| R | 1,871 | 2,100 | 4,099 | ||
| R | 1,688 | 2,139 | 3,942 | ||
| R | 1,925 | 2,155 | 4,157 | ||
| R | 1,850 | 2,040 | 3,923 | ||
| R | 1,381 | 1,785 | 3,598 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
20.8%
American
14.3%
English
13.3%
Irish
11.2%
Scottish
1.6%
Italian
1.0%
French
1.0%
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: 40.3 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
$69,322
Jennings County ranks near the middle of US counties.
Jennings County$69,322
Indiana$71,957
United States$80,734
Jennings 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
12.6%
Child poverty is below the national average.
Children under 1814.7%
Working age (18–64)12.3%
Seniors (65+)9.7%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
96.5%
speak English only
Spanish2.4%
Other Indo-European0.6%
Asian & Pacific Islander0.4%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 67.6% of residents not counted as adherents by any reporting body.
Jennings County, a rural stretch of south-central Indiana with fewer than 28,000 residents, recorded a 58.8-point Republican presidential margin in 2024 — placing it among the state's most one-sided electoral jurisdictions.
The Democratic margin here peaked at eighteen points in 1912. Between 2020 and 2024 the county moved two points toward the Republican candidate; the 2024 margin was fifty-nine points.
A population of 27,562, a 93% non-Hispanic-white share, and a median household income of $69,322 describe the county. The county's voting pattern over the last decade is most similar to that of Jay County and Henry 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.
Jennings County, Indiana. Akashic. https://akashic.app/county/18079/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More heartland swing counties
Frequently asked questions
How did Jennings County, Indiana vote in 2024?
In 2024, Jennings County, Indiana voted Republican by 58.8 points (R+59), carried by the Republican candidate. Out of 11,809 votes cast, 2,328 went Democratic and 9,273 went Republican.
What is Jennings County, Indiana's political typology?
Akashic places Jennings 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 3 times, Republican 31 times, and other 0 times.
When did Jennings County, Indiana last vote Democratic?
The most recent presidential election in which Jennings County, Indiana voted Democratic was 1964.
How many people live in Jennings County, Indiana?
Jennings County, Indiana has a population of 27,562 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Jennings County, Indiana?
Median household income in Jennings County, Indiana is $69,322 — below the national median of $80,734. The Indiana state median is $71,957.
What is the political history of Jennings County, Indiana?
Akashic tracks 38 presidential elections in Jennings County, Indiana from 1876 to 2024. Of those, 3 went Democratic and 31 went Republican. The county's typology — "Heartland Swing" — captures where that record, its demographics, and its recent swing place it among American communities.