Dallas County, Iowa: Diversifying Metro county. In 2024, voted R+5%. Republican peak: R+53 in 1924.
Key facts
- 2024 presidential margin
- R+5MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 107,9682024 5-year
- Median household income
- $102,3792024 5-year
- White (non-Hispanic)
- 83.9%2024 5-year
- Black
- 3.0%2024 5-year
- Hispanic / Latino
- 6.9%2024 5-year
- Peak Democratic margin
- D+33 in 1964MIT Election Lab
- Peak Republican margin
- R+53 in 1924MIT Election Lab
- Most similar
- Caldwell County, TX · similarity 0.88
2024 results by precinct
2024 precinct map of Dallas CountyPrecinct-level 2024 presidential results for Dallas County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | −21.7% |
| 1896 | −17.6% |
| 1900 | −28.8% |
| 1904 | −46.8% |
| 1908 | −24.1% |
| 1912 | −2.0% |
| 1916 | −7.3% |
| 1920 | −43.4% |
| 1924 | −52.9% |
| 1928 | −40.0% |
| 1932 | +3.9% |
| 1936 | +7.5% |
| 1940 | +0.5% |
| 1944 | −0.9% |
| 1948 | +7.9% |
| 1952 | −27.8% |
| 1956 | −12.1% |
| 1960 | −8.0% |
| 1964 | +32.7% |
| 1968 | −4.3% |
| 1972 | −9.3% |
| 1976 | +11.5% |
| 1980 | −7.6% |
| 1984 | +3.8% |
| 1988 | +21.3% |
| 1992 | +6.5% |
| 1996 | +8.6% |
| 2000 | −9.0% |
| 2004 | −16.2% |
| 2008 | −5.5% |
| 2012 | −11.6% |
| 2016 | −9.4% |
| 2020 | −2.0% |
| 2024 | −4.7% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 29,402 | 32,374 | 62,961 | ||
| R | 26,879 | 27,987 | 56,022 | ||
| R | 15,701 | 19,339 | 38,588 | ||
| R | 16,576 | 20,988 | 38,116 | ||
| R | 15,149 | 16,954 | 32,640 | ||
| R | 10,917 | 15,183 | 26,293 | ||
| R | 8,561 | 10,306 | 19,330 | ||
| D | 8,017 | 6,647 | 16,010 | ||
| D | 6,554 | 5,587 | 14,861 | ||
| D | 7,501 | 4,858 | 12,419 | ||
| D | 6,564 | 6,080 | 12,707 | ||
| R | 5,310 | 6,296 | 12,964 | ||
| D | 6,722 | 5,308 | 12,247 | ||
| R | 5,085 | 6,143 | 11,436 | ||
| R | 5,062 | 5,549 | 11,287 | ||
| D | 7,447 | 3,763 | 11,262 | ||
| R | 5,597 | 6,566 | 12,176 | ||
| R | 5,185 | 6,619 | 11,806 | ||
| R | 4,501 | 8,008 | 12,610 | ||
| D | 5,661 | 4,810 | 10,819 | ||
| R | 5,316 | 5,413 | 10,864 | ||
| D | 6,279 | 6,218 | 12,628 | ||
| D | 6,341 | 5,442 | 11,973 | ||
| D | 4,887 | 4,516 | 9,611 | ||
| R | 3,108 | 7,294 | 10,460 | ||
| R | 933 | 6,359 | 10,261 | ||
| R | 2,577 | 6,677 | 9,454 | ||
| R | 2,495 | 2,900 | 5,538 | ||
| R | 1,718 | 1,825 | 5,249 | ||
| R | 1,871 | 3,132 | 5,225 | ||
| R | 1,159 | 3,499 | 4,999 | ||
| R | 1,940 | 3,601 | 5,775 | ||
| R | 2,316 | 3,326 | 5,747 | ||
| R | 1,641 | 2,679 | 4,782 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
29.6%
Irish
15.3%
English
12.0%
American
3.5%
Italian
3.1%
French
2.1%
Scottish
1.5%
African American
2.4%
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. 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.
2024 ACS
Age distribution by sex
Median age: 36.1 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.
2024 ACS
Median household income
Inflation-adjusted dollars
$102,379
Dallas County ranks in the top 5% of US counties.
Dallas County$102,379
Iowa$75,059
United States$80,734
Dallas County ranks in the top 5% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
6.3%
Child poverty is below the national average.
Children under 186.6%
Working age (18–64)6.0%
Seniors (65+)8.1%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
86.8%
speak English only
Spanish4.8%
Other Indo-European3.6%
Asian & Pacific Islander3.1%
Other languages1.7%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 53.2% of residents not counted as adherents by any reporting body.
Rapid population growth west of Des Moines has transformed Dallas County from a deep-red stronghold into one of Iowa's most competitive suburban battlegrounds, with the 2024 presidential margin tightening to R+4.7.
The Democratic margin here reached thirty-three points in 1964. Between 2020 and 2024 the county moved three points toward the Republican candidate; the 2024 margin was five points.
A population of 107,968, a 84% non-Hispanic-white share, and a median household income of $102,379 describe the county. The county's voting pattern over the last decade is most similar to that of Caldwell County and Bastrop County.
Most similar counties
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.
Dallas County, Iowa. Akashic. https://akashic.app/county/19049/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More diversifying metro counties
Frequently asked questions
How did Dallas County, Iowa vote in 2024?
In 2024, Dallas County, Iowa voted Republican by 4.7 points (R+5), carried by the Republican candidate. Out of 62,961 votes cast, 29,402 went Democratic and 32,374 went Republican.
What is Dallas County, Iowa's political typology?
Akashic places Dallas County, Iowa in the "Diversifying Metro" typology — Mid-size metropolitan counties growing more diverse and trending Democratic. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 10 times, Republican 24 times, and other 0 times.
When did Dallas County, Iowa last vote Democratic?
The most recent presidential election in which Dallas County, Iowa voted Democratic was 1996.
How many people live in Dallas County, Iowa?
Dallas County, Iowa has a population of 107,968 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Dallas County, Iowa?
Median household income in Dallas County, Iowa is $102,379 — above the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Dallas County, Iowa?
Akashic tracks 38 presidential elections in Dallas County, Iowa from 1876 to 2024. Of those, 10 went Democratic and 24 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.