† 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
GroupOskaloosaIowaUnited States
German20.1%30.5%12.5%
English15.4%10.2%9.5%
Dutch11.8%2.7%—
Irish11.5%12.8%9.4%
American6.1%4.6%5.3%
Norwegian1.8%4.1%—
Scottish1.5%—1.3%
Swedish1.5%1.9%—
Mexican1.7%5.0%11.3%
Puerto Rican0.3%0.3%1.8%
Spanish0.3%——
Guatemalan0.2%0.4%0.5%
African American†1.0%2.6%9.9%
African0.6%0.3%0.5%
Haitian0.4%—0.3%
Japanese0.6%—0.2%
Laotian0.5%0.2%—
Filipino0.3%0.2%0.9%
Korean0.2%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
Iowa
United States
Median age
37.6
38.8
39.1
Age 18–24
11.9%
10.0%
9.2%
Age 65 and older
20.4%
18.1%
17.2%
Household economy
Measure
Oskaloosa
Iowa
United States
Median household income
$64,004
$75,059
$84,427
Poverty rate
16.6%
11.1%
12.5%
Bachelor's degree or higher (25+)
25.4%
31.8%
35.6%
Languages at home
Measure
Oskaloosa
Iowa
United States
Speaks a non-English language at home
4.7%
9.2%
22.3%
Spanish
1.6%
4.7%
13.6%
Other Asian & Pacific Island
1.5%
1.0%
1.1%
Religious landscape
Measure
Oskaloosa
Iowa
United States
Catholic
—
14.7%
18.6%
Evangelical Protestant
—
10.9%
16.5%
Unclaimed / not counted
—
55.2%
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.
Oskaloosa, Iowa
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−15.1%
2008
−1.4%
2012
−6.7%
2016
−32.3%
2020
−31.9%
2024
−35.2%
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
31.6%Harris1,563
66.8%Trump3,306
1.6%
R+35.2
R+3.3
R+33.8
4,948
R
32.8%Biden1,747
64.7%Trump3,447
2.6%
R+31.9
D+0.4
R+36.3
5,330
R
30.9%Clinton1,557
63.1%Trump3,183
6.0%
R+32.3
R+25.6
R+34.3
5,041
R
45.7%Obama2,381
52.3%Romney2,728
2.0%
R+6.7
R+5.3
R+10.5
5,215
R
48.1%Obama2,544
49.5%McCain2,616
2.4%
R+1.4
D+13.7
R+8.6
5,289
R
42.3%Kerry2,128
57.4%Bush2,888
0.3%
R+15.1
—
R+12.6
5,031
Oskaloosa anchors a reliably Republican rural county in south-central Iowa, where a tight-knit evangelical community and a shrinking but resilient manufacturing base consistently drive above-average turnout for a city its size.
Across the recorded series it reached a Republican high of 35.2 points in 2024. Between 2020 and 2024 the city moved 3.3 points toward the Republican candidate; the 2024 margin was 35.2 points.
A population of 11,504, a 92% non-Hispanic-white share, and a median household income of $64,004 describe the city. The city's voting pattern over the last decade is most similar to that of Peru and Wheelersburg.
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, Oskaloosa, Iowa voted Republican by 35.2 points (R+35.2), carried by the Republican candidate. Out of 4,948 votes cast, 1,563 went Democratic and 3,306 went Republican.
How many people live in Oskaloosa, Iowa?
Oskaloosa, Iowa has a population of 11,504 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Oskaloosa, Iowa?
Median household income in Oskaloosa, Iowa is $64,004 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Oskaloosa, Iowa?
Akashic tracks 6 presidential elections in Oskaloosa, Iowa from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
