† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupDecaturIndianaUnited States
German27.1%19.5%12.5%
English7.3%11.3%9.5%
Irish6.6%10.1%9.4%
American6.2%6.9%5.3%
French1.5%1.3%1.6%
Italian1.4%2.4%4.8%
Scottish1.2%1.5%1.3%
Polish0.8%2.6%2.2%
Mexican8.5%5.7%11.3%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Decatur
Indiana
United States
Median age
44.6
38.2
39.1
Age 18–24
8.9%
9.6%
9.2%
Age 65 and older
20.3%
16.7%
17.2%
Household economy
Measure
Decatur
Indiana
United States
Median household income
$58,646
$71,957
$84,427
Poverty rate
11.3%
12.4%
12.5%
Bachelor's degree or higher (25+)
12.3%
29.7%
35.6%
Languages at home
Measure
Decatur
Indiana
United States
Speaks a non-English language at home
3.3%
10.4%
22.3%
Spanish
2.5%
5.5%
13.6%
Religious landscape
Measure
Decatur
Indiana
United States
Catholic
—
11.5%
18.6%
Evangelical Protestant
—
18.0%
16.5%
Unclaimed / not counted
—
57.9%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Decatur, Indiana
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−23.7%
2008
−0.0%
2012
−14.5%
2016
−31.5%
2020
−32.3%
2024
−33.0%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
32.4%Harris1,467
65.4%Trump2,963
2.2%
R+33.0
R+0.7
R+31.6
4,530
R
32.4%Biden1,473
64.8%Trump2,942
2.8%
R+32.3
R+0.8
R+36.8
4,541
R
31.0%Clinton1,260
62.6%Trump2,539
6.4%
R+31.5
R+17.0
R+33.6
4,058
R
41.6%Obama1,611
56.1%Romney2,172
2.2%
R+14.5
R+14.5
R+18.4
3,869
R
49.1%Obama2,046
49.1%McCain2,048
1.8%
R+0.05
D+23.7
R+7.3
4,171
R
37.5%Kerry1,463
61.2%Bush2,389
1.3%
R+23.7
—
R+21.3
3,901
Decatur anchors Adams County, one of Indiana's most rural and consistently Republican-leaning corners, where a tight cluster of food-processing and light-manufacturing employers ties economic identity closely to working-class voter blocs.
Across the recorded series it reached a Republican high of 33.0 points in 2024. Between 2020 and 2024 the city moved 0.7 points toward the Republican candidate; the 2024 margin was 33.0 points.
A population of 9,811, a 87% non-Hispanic-white share, and a median household income of $58,646 describe the city. The city's voting pattern over the last decade is most similar to that of Bryan and Peru.
Akashic
Political twins — cities
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
In 2024, Decatur, Indiana voted Republican by 33.0 points (R+33.0), carried by the Republican candidate. Out of 4,530 votes cast, 1,467 went Democratic and 2,963 went Republican.
How many people live in Decatur, Indiana?
Decatur, Indiana has a population of 9,811 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Decatur, Indiana?
Median household income in Decatur, Indiana is $58,646 — below the national median of $80,734. The Indiana state median is $71,957.
What is the political history of Decatur, Indiana?
Akashic tracks 6 presidential elections in Decatur, Indiana from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
