State House District 18 State House District (IA) — Elections 1876–2024

Iowa 18th State House District, Iowa: Republican loyalist district. In 2024, voted R+41%. Republican peak: R+56 in 1920.

Key facts

2024 presidential margin: R+41MIT Election Lab
Political archetype: Republican loyalistAkashic typology
Population: 33,4522024 5-year
Median household income: $61,6782024 5-year
White (non-Hispanic): 92.9%2024 5-year
Black: 1.4%2024 5-year
Hispanic / Latino: 2.3%2024 5-year
Peak Democratic margin: D+3 in 1912MIT Election Lab
Peak Republican margin: R+56 in 1920MIT Election Lab

2024 results by constituent county

3 counties · 0 D · 3 R

R+60

D+60

One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.

38 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	R	−40.6%	4,966	11,947	17,199
2020	R	−39.7%	5,182	12,193	17,649
2016	R	−41.0%	4,476	11,477	17,073
2012	R	−21.2%	6,531	10,132	16,975
2008	R	−13.3%	7,481	9,809	17,567
2004	R	−32.3%	6,060	11,911	18,135
2000	R	−28.5%	5,856	10,698	17,005
1996	R	−15.8%	6,016	8,670	16,784
1992	R	−16.7%	5,138	8,040	17,327
1988	R	−23.5%	6,296	10,200	16,628
1984	R	−42.0%	5,361	13,216	18,708
1980	R	−43.0%	4,920	13,271	19,415
1976	R	−25.3%	7,015	11,843	19,110
1972	R	−48.6%	4,682	13,781	18,741
1968	R	−39.3%	5,454	13,337	20,059
1964	R	−0.2%	10,445	10,484	20,971
1960	R	−34.6%	7,775	16,016	23,802
1956	R	−36.7%	7,426	16,077	23,542
1952	R	−50.3%	6,373	19,354	25,805
1948	R	−20.5%	8,514	12,969	21,752
1944	R	−28.8%	7,710	13,998	21,834
1940	R	−24.3%	9,844	16,190	26,144
1936	R	−12.1%	11,318	14,457	25,933
1932	D	+2.7%	11,358	10,746	22,418
1928	R	−42.8%	6,380	16,088	22,658
1924	R	−52.5%	3,005	14,375	21,641
1920	R	−56.3%	4,366	16,196	21,013
1916	R	−22.9%	4,403	7,102	11,787
1912	O	+3.4%	3,696	3,298	11,812
1908	R	−28.0%	4,094	7,457	12,001
1904	R	−47.1%	2,749	8,327	11,840
1900	R	−26.8%	4,743	8,350	13,471
1896	R	−18.7%	5,476	8,040	13,695
1892	R	−18.2%	4,171	6,262	11,516
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

German

24.5%

English

13.1%

Irish

10.6%

American

5.2%

Italian

1.7%

French

1.3%

Scottish

1.2%

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: 44.0 in this county, 39.1 nationally

Male

Age

Female

1.2%

85+

2.4%

2.9%

75–84

3.7%

6.6%

65–74

6.7%

6.9%

55–64

7.1%

6.1%

45–54

5.4%

6.3%

35–44

5.6%

5.7%

25–34

5.1%

3.7%

18–24

2.8%

8.4%

5–17

8.1%

2.8%

2.4%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$61,678

State House District 18 ranks near the middle of US counties.

State House District 18$61,678

Iowa$75,059

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

14.5%

Children face moderate poverty.

Children under 1818.4%

Working age (18–64)13.3%

Seniors (65+)12.3%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

97.9%

speak English only

Spanish0.8%

Other Indo-European0.7%

Asian & Pacific Islander0.4%

Other languages0.2%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Mainline Protestant

20.9%

Methodist

9.9%

Other Christian

7.7%

Catholic & Orthodox

7.1%

Baptist

2.2%

Pentecostal & Holiness

1.6%

Source · 2020 US Religion Census. Remaining 50.6% of residents not counted as adherents by any reporting body.

With a 2024 presidential margin of R+40.3, this rural Iowa district ranks among the state's most consistently one-sided, leaving little competitive ground for statewide or legislative challengers.

The Republican margin in Iowa 18th State House District reached its widest at fifty-six points in 1920. The margin in 2024 was forty-one points, in line with the district's deep historical pattern.

Its loyalty is rooted in its place. Median household income of $61,678, a 93% non-Hispanic-white share, and a population of 33,452 together describe a district whose political habits are deeply settled.

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Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

State House District 18, Iowa. Akashic. https://akashic.app/sld-lower/19018/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State House District 18, Iowa vote in 2024?

In 2024, State House District 18, Iowa voted Republican by 40.6 points (R+41), carried by the Republican candidate. Out of 17,199 votes cast, 4,966 went Democratic and 11,947 went Republican.

What is State House District 18, Iowa's political archetype?

Akashic classifies State House District 18, 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 1 times, Republican 32 times, and other 1 times.

When did State House District 18, Iowa last vote Democratic?

The most recent presidential election in which State House District 18, Iowa voted Democratic was 1932.

How many people live in State House District 18, Iowa?

State House District 18, Iowa has a population of 33,452 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in State House District 18, Iowa?

Median household income in State House District 18, Iowa is $61,678 — below the national median of $80,734. The Iowa state median is $75,059.

What is the political history of State House District 18, Iowa?

Akashic tracks 38 presidential elections in State House District 18, Iowa from 1876 to 2024. Of those, 1 went Democratic and 32 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.

Iowa 18th State House District has voted Republican in twenty-three straight presidential cycles.

Key facts

Demographics

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Frequently asked questions