2024 results by precinct
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,482 | 5,004 | 7,597 | |
| 2020 | R | 2,843 | 4,956 | 7,943 | |
| 2016 | R | 2,726 | 4,463 | 7,785 | |
| 2012 | R | 3,782 | 3,991 | 7,927 | |
| 2008 | D | 4,018 | 3,913 | 8,078 | |
| 2004 | R | 3,895 | 4,367 | 8,335 | |
| 2000 | R | 3,407 | 3,968 | 7,574 | |
| 1996 | D | 3,455 | 3,109 | 7,277 | |
| 1992 | D | 3,262 | 3,031 | 7,681 | |
| 1988 | D | 4,156 | 3,277 | 7,494 | |
| 1984 | R | 3,330 | 4,279 | 7,695 | |
| 1980 | R | 2,741 | 4,745 | 8,266 | |
| 1976 | D | 3,953 | 3,932 | 8,025 | |
| 1972 | R | 2,913 | 4,803 | 7,890 | |
| 1968 | R | 3,058 | 4,607 | 8,001 | |
| 1964 | D | 5,195 | 3,127 | 8,332 | |
| 1960 | R | 3,905 | 5,265 | 9,174 | |
| 1956 | R | 3,829 | 5,667 | 9,514 | |
| 1952 | R | 2,788 | 7,006 | 9,828 | |
| 1948 | D | 3,613 | 3,535 | 7,345 | |
| 1944 | D | 4,302 | 3,837 | 8,180 | |
| 1940 | D | 5,279 | 4,183 | 9,501 | |
| 1936 | D | 5,432 | 3,174 | 8,758 | |
| 1932 | D | 5,191 | 2,330 | 7,624 | |
| 1928 | R | 2,975 | 4,171 | 7,190 | |
| 1924 | R | 490 | 4,401 | 7,246 | |
| 1920 | R | 1,126 | 5,924 | 7,148 | |
| 1916 | R | 1,125 | 3,037 | 4,281 | |
| 1912 | D | 1,041 | 831 | 4,290 | |
| 1908 | R | 1,145 | 2,765 | 4,056 | |
| 1904 | R | 746 | 3,118 | 4,045 | |
| 1900 | R | 1,134 | 3,259 | 4,455 | |
| 1896 | R | 1,300 | 3,074 | 4,439 | |
| 1892 | R | 1,227 | 2,073 | 3,373 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
American
100.0%
African American
0.8%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 41.7 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.
Median household income
2024 inflation-adjusted dollars
$72,432
Hamilton County ranks near the middle of US counties.
Hamilton County$72,432
Iowa$75,059
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
7.4%
Children face moderate poverty.
Children under 1818.0%
Working age (18–64)100.0%
Seniors (65+)18.0%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
0.0%
speak English only
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 50.3% of residents not counted as adherents by any reporting body.
Hamilton County's agricultural economy and sparse small-town population have pushed its presidential margins steadily rightward over the past two decades, landing at R+33.2 in 2024 — well above the statewide average.
The Republican margin in Hamilton County reached its widest at sixty-seven points in 1920. The margin in 2024 was thirty-three points, in line with the county's deep historical pattern.
Hamilton County's loyalty is rooted in its place. Median household income of $72,432, a 87% non-Hispanic-white share, and a population of 14,886 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Hardin County and Carroll County.
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