Iowa 12th State Senate District, Iowa: Republican loyalist district. In 2024, voted R+33%. Republican peak: R+37 in 1924.
Key facts
- 2024 presidential margin
- R+33MIT Election Lab
- Political archetype
- Republican loyalistAkashic typology
- Population
- 85,7102024 5-year
- Median household income
- $78,6642024 5-year
- White (non-Hispanic)
- 90.0%2024 5-year
- Black
- 1.3%2024 5-year
- Hispanic / Latino
- 5.3%2024 5-year
- Peak Democratic margin
- D+25 in 1964MIT Election Lab
- Peak Republican margin
- R+37 in 1924MIT Election Lab
Constituent county margins for State Senate District 12, IAOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 15,047 | 30,431 | 46,281 | ||
| R | 15,465 | 28,863 | 45,103 | ||
| R | 12,684 | 23,827 | 39,479 | ||
| R | 17,740 | 20,578 | 39,137 | ||
| R | 18,052 | 19,764 | 38,608 | ||
| R | 16,650 | 20,453 | 37,465 | ||
| R | 15,067 | 17,603 | 33,586 | ||
| D | 15,851 | 12,405 | 31,856 | ||
| D | 14,562 | 12,371 | 33,522 | ||
| D | 18,011 | 13,150 | 31,379 | ||
| R | 16,634 | 18,174 | 35,067 | ||
| R | 13,705 | 18,897 | 35,491 | ||
| D | 18,513 | 15,343 | 34,504 | ||
| R | 12,992 | 20,483 | 34,168 | ||
| R | 13,581 | 18,510 | 34,216 | ||
| D | 22,693 | 13,543 | 36,316 | ||
| R | 16,815 | 23,851 | 40,714 | ||
| R | 17,695 | 23,604 | 41,338 | ||
| R | 15,593 | 29,208 | 45,074 | ||
| D | 20,071 | 19,660 | 40,391 | ||
| R | 18,839 | 22,833 | 41,902 | ||
| R | 22,878 | 27,009 | 50,142 | ||
| D | 25,029 | 24,587 | 50,233 | ||
| D | 22,442 | 16,366 | 39,489 | ||
| R | 15,159 | 27,972 | 43,552 | ||
| R | 8,190 | 24,845 | 44,893 | ||
| R | 12,992 | 28,316 | 42,147 | ||
| R | 11,876 | 12,918 | 25,544 | ||
| D | 8,858 | 8,144 | 24,028 | ||
| R | 10,235 | 14,361 | 25,592 | ||
| R | 7,964 | 16,162 | 25,860 | ||
| R | 12,204 | 16,049 | 29,031 | ||
| R | 13,802 | 14,455 | 28,640 | ||
| R | 9,077 | 12,288 | 24,014 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
26.8%
Irish
13.8%
English
13.2%
American
4.7%
Italian
2.0%
Scottish
1.7%
French
1.6%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 39.2 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
$78,664
State Senate District 12 ranks near the middle of US counties.
State Senate District 12$78,664
Iowa$75,059
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
9.7%
Child poverty is below the national average.
Children under 1812.0%
Working age (18–64)8.7%
Seniors (65+)11.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
92.2%
speak English only
Other Indo-European3.2%
Spanish2.9%
Asian & Pacific Islander1.1%
Other languages0.5%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 61.4% of residents not counted as adherents by any reporting body.
With a 2024 presidential margin of R+45.7, this rural Iowa district ranks among the state's most lopsided, reflecting the deep consolidation of non-urban sentiment that has reshaped Iowa's political geography over the past decade.
The Republican margin in Iowa 12th State Senate District reached its widest at thirty-seven points in 1924. The margin in 2024 was thirty-three points, in line with the district's deep historical pattern.
Its loyalty is rooted in its place. Median household income of $78,664, a 90% non-Hispanic-white share, and a population of 85,710 together describe a district whose political habits are deeply settled.
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.
State Senate District 12, Iowa. Akashic. https://akashic.app/sld-upper/19012/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 12, Iowa vote in 2024?
In 2024, State Senate District 12, Iowa voted Republican by 33.2 points (R+33), carried by the Republican candidate. Out of 46,281 votes cast, 15,047 went Democratic and 30,431 went Republican.
What is State Senate District 12, Iowa's political archetype?
Akashic classifies State Senate District 12, Iowa as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 9 times, Republican 25 times, and other 0 times.
When did State Senate District 12, Iowa last vote Democratic?
The most recent presidential election in which State Senate District 12, Iowa voted Democratic was 1996.
How many people live in State Senate District 12, Iowa?
State Senate District 12, Iowa has a population of 85,710 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 12, Iowa?
Median household income in State Senate District 12, Iowa is $78,664 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of State Senate District 12, Iowa?
Akashic tracks 38 presidential elections in State Senate District 12, Iowa from 1876 to 2024. Of those, 9 went Democratic and 25 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.