† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
1 counties by 2024 margin · County returns · 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
GroupDecatur, INIndianaUnited States
German27.8%19.5%12.5%
English7.5%11.3%9.5%
Irish6.8%10.1%9.4%
American6.4%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%
Mexican4.2%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, IN
Indiana
United States
Median age
33.2
38.2
39.1
Age 18–24
8.9%
9.6%
9.2%
Age 65 and older
16.4%
16.7%
17.2%
Household economy
Measure
Decatur, IN
Indiana
United States
Median household income
$65,289
$71,957
$84,427
Poverty rate
11.2%
12.4%
12.5%
Bachelor's degree or higher (25+)
16.2%
29.7%
35.6%
Languages at home
Measure
Decatur, IN
Indiana
United States
Speaks a non-English language at home
16.0%
10.4%
22.3%
Spanish
2.1%
5.5%
13.6%
German or other West Germanic
13.1%
1.1%
0.5%
Religious landscape
Measure
Decatur, IN
Indiana
United States
Catholic
8.4%
11.5%
18.6%
Evangelical Protestant
58.2%
18.0%
16.5%
Unclaimed / not counted
17.6%
57.9%
51.5%
Mainline Protestant
8.4%
7.1%
5.2%
Black Protestant
5.9%
2.9%
2.2%
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, IN
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1892
+37.1%
1896
+34.4%
1900
+32.2%
1904
+19.4%
1908
+31.7%
1912
+42.5%
1916
+22.1%
1920
−6.1%
1924
+12.0%
1928
+0.3%
1932
+33.5%
1936
+27.9%
1940
−8.9%
1944
−19.2%
1948
−2.0%
1952
−23.6%
1956
−33.2%
1960
−23.1%
1964
+21.9%
1968
−9.8%
1972
−30.9%
1976
−12.1%
1980
−14.2%
1984
−33.8%
1988
−36.1%
1992
−18.6%
1996
−21.5%
2000
−38.0%
2004
−46.6%
2008
−25.7%
2012
−39.4%
2016
−51.9%
2020
−52.4%
2024
−52.6%
DemocraticRepublican
34 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.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
22.8%Harris3,179
75.4%Trump10,528
1.1%Kennedy150 +2
R+52.6
R+0.2
R+51.1
13,966
All 5 candidates in 2024 · 3 minor / independent
Donald J TrumpRepublican75.4%10,528
Kamala D HarrisDemocratic22.8%3,179
Robert F KennedyIndependent1.1%150
Chase OliverLibertarian0.7%102
Peter SonskiIndependent0.1%7
R
22.8%Biden3,236
75.2%Trump10,686
2.0%
R+52.4
R+0.6
R+56.9
14,209
R
21.3%Clinton2,802
73.1%Trump9,642
5.6%
R+51.9
R+12.5
R+54.0
13,185
R
29.2%Obama3,806
68.6%Romney8,937
2.2%
R+39.4
R+13.6
R+43.2
13,032
R
36.5%Obama4,928
62.2%McCain8,404
1.3%
R+25.7
D+20.9
R+33.0
13,513
R
26.3%Kerry3,512
73.0%Bush9,734
0.7%
R+46.6
R+8.7
R+44.2
13,340
R
30.0%Gore3,775
68.0%Bush8,555
2.1%
R+38.0
R+16.5
R+38.5
12,590
R
33.6%Clinton4,247
55.1%Dole6,960
11.3%
R+21.5
R+2.8
R+30.0
12,637
R
29.2%Clinton3,708
47.8%Bush6,078
23.0%
R+18.6
D+17.4
R+24.2
12,708
R
31.8%Dukakis3,811
67.8%Bush8,137
0.4%
R+36.1
R+2.3
R+28.3
11,997
R
32.8%Mondale3,923
66.6%Reagan7,958
0.6%
R+33.8
R+19.6
R+15.5
11,952
R
39.0%Carter4,673
53.2%Reagan6,368
7.8%
R+14.2
R+2.0
R+4.4
11,978
R
43.4%Carter4,908
55.5%Ford6,280
1.0%
R+12.1
D+18.8
R+14.2
11,306
R
34.3%McGovern3,971
65.2%Nixon7,549
0.4%
R+30.9
R+21.1
R+7.8
11,572
R
41.5%Humphrey4,667
51.3%Nixon5,774
7.3%
R+9.8
R+31.8
R+9.1
11,259
D
60.5%Johnson6,637
38.5%Goldwater4,230
1.0%
D+21.9
D+45.0
R+0.6
10,973
R
38.0%Kennedy4,338
61.1%Nixon6,972
0.9%
R+23.1
D+10.1
R+23.2
11,409
R
32.9%Stevenson3,520
66.1%Eisenhower7,079
1.0%
R+33.2
R+9.6
R+17.8
10,708
R
36.0%Stevenson3,744
59.6%Eisenhower6,204
4.4%
R+23.6
R+21.6
R+12.9
10,408
R
48.1%Truman4,640
50.1%Dewey4,832
1.8%
R+2.0
D+17.2
R+6.5
9,645
R
39.6%Roosevelt3,804
58.8%Dewey5,648
1.6%
R+19.2
R+10.3
R+26.7
9,601
R
45.0%Roosevelt4,382
53.9%Willkie5,247
1.0%
R+8.9
R+36.8
R+18.8
9,730
D
63.2%Roosevelt5,822
35.3%Landon3,249
1.5%
D+27.9
R+5.5
D+3.7
9,208
D
66.1%Roosevelt5,892
32.6%Hoover2,910
1.2%
D+33.5
D+33.2
D+15.7
8,913
D
50.0%Smith4,066
49.7%Hoover4,045
0.3%
D+0.3
R+11.8
D+17.7
8,139
D
53.4%Davis4,300
41.3%Coolidge3,330
5.3%
D+12.0
D+18.2
D+37.2
8,055
R
45.7%Cox3,653
51.8%Harding4,144
2.5%
R+6.1
R+28.3
D+20.1
7,998
D
59.0%Wilson2,875
36.8%Hughes1,796
4.2%
D+22.1
R+20.4
D+19.0
4,876
D
61.6%Wilson2,961
19.1%Taft917
19.3%
D+42.5
D+10.8
D+23.0
4,805
D
64.4%Bryan3,404
32.6%Taft1,726
3.0%
D+31.7
D+12.3
D+41.3
5,289
D
57.3%Parker2,973
37.9%Roosevelt1,967
4.8%
D+19.4
R+12.8
D+39.1
5,187
D
65.1%Bryan3,337
32.9%McKinley1,688
2.0%
D+32.2
R+2.2
D+39.7
5,126
D
66.5%Bryan3,340
32.1%McKinley1,613
1.5%
D+34.4
R+2.8
D+40.4
5,026
D
65.1%Cleveland2,906
27.9%Harrison1,247
7.0%
D+37.1
—
D+35.5
4,467
Congressional elections · 3 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2024
R
21.2%2,623
76.4%9,453
12,376
2022
R
20.6%1,841
77.3%6,914
8,950
2018
R
28.2%3,146
67.4%7,511
11,146
voter registration
Registered voters
Total registered voters, over time
Registered voters
Voter registration in Decatur, IN
Year
Total registered
2016
19,375
2018
18,611
2020
19,594
2022
20,039
2024
19,937
domestic migration
Who moves in and out
Net domestic migration over time
−195 net domestic migration · 2025
20112025
Net −2,873 over 2011–2025 · gain loss
Domestic migration in Decatur, IN in Decatur, IN: net domestic migration by year
Year
Net domestic migration
2011
−402
2012
−345
2013
−123
2014
−285
2015
−134
2016
−126
2017
−162
2018
−198
2019
−239
2021
−160
2022
−124
2023
−134
2024
−246
2025
−195
Decatur anchors Adams County, a rural northeast Indiana community where tight-knit Amish and German-heritage populations contribute to some of the state's more consistent conservative margins in federal and statewide contests.
Across the recorded series it reached a Democratic high of 42.5 points in 1912 and a Republican high of 52.6 points in 2024. The 2024 margin was 52.6 points.
A population of 36,227, a 93% non-Hispanic-white share, and a median household income of $65,289 describe the metro. The metro's voting pattern over the last decade is most similar to that of Washington, IN and Quincy, IL-MO.
Akashic
Political twins — metros
The metros 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.
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.
Decatur, IN, Indiana. Akashic. https://akashic.app/cbsa/19540/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, Decatur, IN, Indiana voted Republican by 52.6 points (R+52.6), carried by the Republican candidate. Out of 13,966 votes cast, 3,179 went Democratic and 10,528 went Republican.
When did Decatur, IN, Indiana last vote Democratic?
The most recent presidential election in which Decatur, IN, Indiana voted Democratic was 1964.
How many people live in Decatur, IN, Indiana?
Decatur, IN, Indiana has a population of 36,227 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Decatur, IN, Indiana?
Median household income in Decatur, IN, Indiana is $65,289 — below the national median of $80,734. The Indiana state median is $71,957.
What is the political history of Decatur, IN, Indiana?
Akashic tracks 34 presidential elections in Decatur, IN, Indiana from 1892 to 2024. Of those, 12 went Democratic and 22 went Republican.
