† 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
GroupOskaloosa, IAIowaUnited States
German20.5%30.5%12.5%
English15.7%10.2%9.5%
Dutch12.0%2.7%—
Irish11.7%12.8%9.4%
American6.2%4.6%5.3%
Norwegian1.8%4.1%—
Scottish1.5%—1.3%
Swedish1.5%1.9%—
Mexican1.5%5.0%11.3%
Puerto Rican0.3%0.3%1.8%
Spanish0.3%——
Guatemalan0.2%0.4%0.5%
African American†0.5%2.6%9.9%
African0.3%0.3%0.5%
Haitian0.2%—0.3%
Japanese0.4%—0.2%
Laotian0.3%0.2%—
Filipino0.2%0.2%0.9%
Korean0.1%0.2%0.4%
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
Oskaloosa, IA
Iowa
United States
Median age
39
38.8
39.1
Age 18–24
9.8%
10.0%
9.2%
Age 65 and older
19.1%
18.1%
17.2%
Household economy
Measure
Oskaloosa, IA
Iowa
United States
Median household income
$70,940
$75,059
$84,427
Poverty rate
12.6%
11.1%
12.5%
Bachelor's degree or higher (25+)
24.1%
31.8%
35.6%
Languages at home
Measure
Oskaloosa, IA
Iowa
United States
Speaks a non-English language at home
3.5%
9.2%
22.3%
Spanish
1.4%
4.7%
13.6%
Religious landscape
Measure
Oskaloosa, IA
Iowa
United States
Catholic
4.2%
14.7%
18.6%
Evangelical Protestant
19.1%
10.9%
16.5%
Unclaimed / not counted
56.7%
55.2%
51.5%
Mainline Protestant
18.0%
15.8%
5.2%
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.
Oskaloosa, IA
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1892
−13.1%
1896
−3.4%
1900
−10.6%
1904
−26.3%
1908
−4.2%
1912
+13.9%
1916
+0.1%
1920
−32.6%
1924
−39.2%
1928
−39.1%
1932
+8.7%
1936
+7.0%
1940
−3.1%
1944
−4.7%
1948
+1.0%
1952
−31.5%
1956
−26.3%
1960
−31.0%
1964
+25.6%
1968
−19.5%
1972
−30.0%
1976
−4.2%
1980
−16.2%
1984
−19.2%
1988
−3.7%
1992
−12.1%
1996
−8.2%
2000
−27.3%
2004
−28.6%
2008
−16.5%
2012
−20.5%
2016
−44.9%
2020
−47.4%
2024
−51.4%
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
23.5%Harris2,577
75.0%Trump8,207
1.5%
R+51.4
R+4.1
R+50.0
10,946
R
25.4%Biden2,894
72.8%Trump8,297
1.9%
R+47.4
R+2.5
R+51.8
11,404
R
24.4%Clinton2,619
69.3%Trump7,432
6.3%
R+44.9
R+24.3
R+47.0
10,723
R
38.7%Obama4,213
59.2%Romney6,448
2.0%
R+20.5
R+4.0
R+24.4
10,883
R
40.8%Obama4,464
57.4%McCain6,271
1.8%
R+16.5
D+12.1
R+23.8
10,932
R
35.3%Kerry3,790
63.9%Bush6,858
0.7%
R+28.6
R+1.3
R+26.1
10,728
R
35.3%Gore3,370
62.6%Bush5,971
2.1%
R+27.3
R+19.0
R+27.8
9,543
R
41.8%Clinton3,737
50.0%Dole4,473
8.2%
R+8.2
D+3.9
R+16.8
8,941
R
36.2%Clinton3,714
48.3%Bush4,953
15.4%
R+12.1
R+8.4
R+17.7
10,247
R
47.8%Dukakis4,451
51.5%Bush4,798
0.8%
R+3.7
D+15.5
D+4.0
9,320
R
39.9%Mondale4,107
59.1%Reagan6,086
1.0%
R+19.2
R+3.0
R+1.0
10,293
R
38.3%Carter3,968
54.5%Reagan5,650
7.2%
R+16.2
R+12.0
R+6.5
10,363
R
47.2%Carter4,838
51.4%Ford5,267
1.4%
R+4.2
D+25.8
R+6.2
10,251
R
33.9%McGovern3,382
63.8%Nixon6,374
2.3%
R+30.0
R+10.4
R+6.8
9,988
R
37.3%Humphrey3,721
56.9%Nixon5,670
5.8%
R+19.5
R+45.1
R+18.9
9,970
D
62.7%Johnson6,396
37.1%Goldwater3,787
0.2%
D+25.6
D+56.6
D+3.0
10,205
R
34.4%Kennedy3,746
65.4%Nixon7,129
0.2%
R+31.0
R+4.8
R+31.2
10,901
R
35.9%Stevenson3,965
62.2%Eisenhower6,864
1.9%
R+26.3
D+5.2
R+10.9
11,034
R
32.5%Stevenson3,745
64.0%Eisenhower7,369
3.5%
R+31.5
R+32.4
R+20.7
11,523
D
47.9%Truman4,327
46.9%Dewey4,238
5.1%
D+1.0
D+5.7
R+3.5
9,030
R
46.2%Roosevelt4,652
50.9%Dewey5,123
2.9%
R+4.7
R+1.6
R+12.2
10,072
R
48.1%Roosevelt5,757
51.1%Willkie6,123
0.8%
R+3.1
R+10.1
R+13.0
11,977
D
52.0%Roosevelt6,094
44.9%Landon5,270
3.1%
D+7.0
R+1.7
R+17.2
11,726
D
52.1%Roosevelt5,586
43.5%Hoover4,655
4.4%
D+8.7
D+47.8
R+9.1
10,713
R
30.0%Smith3,200
69.1%Hoover7,368
0.9%
R+39.1
D+0.2
R+21.6
10,665
R
15.9%Davis1,673
55.1%Coolidge5,810
29.0%
R+39.2
R+6.7
R+14.1
10,543
R
32.0%Cox3,339
64.5%Harding6,739
3.5%
R+32.6
R+32.7
R+6.4
10,440
D
48.3%Wilson3,151
48.1%Hughes3,143
3.6%
D+0.1
R+13.7
R+3.0
6,529
D
40.0%Wilson2,576
26.1%Taft1,682
34.0%
D+13.9
D+18.1
R+5.7
6,448
R
44.3%Bryan3,035
48.5%Taft3,326
7.2%
R+4.2
D+22.0
D+5.3
6,856
R
33.3%Parker2,287
59.6%Roosevelt4,091
7.1%
R+26.3
R+15.6
R+6.6
6,867
R
43.3%Bryan3,596
53.9%McKinley4,480
2.8%
R+10.6
R+7.3
R+3.1
8,312
R
47.3%Bryan3,974
50.7%McKinley4,256
2.0%
R+3.4
D+9.7
D+2.7
8,396
R
34.8%Cleveland2,428
47.9%Harrison3,340
17.3%
R+13.1
—
R+14.7
6,976
Congressional elections · 2 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2022
R
24.2%1,936
75.7%6,049
7,993
2020
R
26.5%2,969
70.1%7,860
11,220
voter registration
Registered voters
By party of registration, over time
Party registration · 2024R+35.7
vs
Presidential vote · 2024R+51.4
Registration leans Republican; the presidential vote runs 16 points more Democratic.
DemocraticRepublicanUnaffiliatedOther parties
Voter registration in Oskaloosa, IA
Year
Total registered
Democratic
Republican
Unaffiliated
Other
2008
15,141
3,719
5,760
5,659
3
2010
15,473
3,550
6,267
5,649
7
2012
15,811
3,592
6,389
5,813
17
2014
15,403
3,352
6,318
5,694
39
2016
14,996
2,928
7,190
4,805
73
2018
14,880
2,689
7,292
4,792
107
2020
15,203
2,956
7,502
4,630
115
2022
14,825
2,621
7,600
4,466
138
2024
14,724
2,428
7,688
4,459
149
domestic migration
Who moves in and out
Net domestic migration over time
−29 net domestic migration · 2025
20112025
Net −1,154 over 2011–2025 · gain loss
Domestic migration in Oskaloosa, IA in Oskaloosa, IA: net domestic migration by year
Year
Net domestic migration
2011
+3
2012
−117
2013
−60
2014
−138
2015
−149
2016
−201
2017
−40
2018
−245
2019
+15
2021
−162
2022
+36
2023
−19
2024
−48
2025
−29
Oskaloosa, IA sits in the Corn Belt. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 25.6 points in 1964 and a Republican high of 51.4 points in 2024. Between 2020 and 2024 the metro moved 4.1 points toward the Republican candidate; the 2024 margin was 51.4 points.
A population of 22,021, a 92% non-Hispanic-white share, and a median household income of $70,940 describe the metro. The metro's voting pattern over the last decade is most similar to that of Bellefontaine, OH and Urbana, OH.
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.
Oskaloosa, IA, Iowa. Akashic. https://akashic.app/cbsa/36820/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, Oskaloosa, IA, Iowa voted Republican by 51.4 points (R+51.4), carried by the Republican candidate. Out of 10,946 votes cast, 2,577 went Democratic and 8,207 went Republican.
When did Oskaloosa, IA, Iowa last vote Democratic?
The most recent presidential election in which Oskaloosa, IA, Iowa voted Democratic was 1964.
How many people live in Oskaloosa, IA, Iowa?
Oskaloosa, IA, Iowa has a population of 22,021 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Oskaloosa, IA, Iowa?
Median household income in Oskaloosa, IA, Iowa is $70,940 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Oskaloosa, IA, Iowa?
Akashic tracks 34 presidential elections in Oskaloosa, IA, Iowa from 1892 to 2024. Of those, 6 went Democratic and 28 went Republican.
