Marshall County, South Dakota: Republican loyalist county. In 2024, voted R+24%. Republican peak: R+48 in 1904.
Key facts
- 2024 presidential margin
- R+24MIT Election Lab
- Political archetype
- Republican loyalistAkashic typology
- Population
- 4,3442024 5-year
- Median household income
- $78,1562024 5-year
- White (non-Hispanic)
- 84.5%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 6.4%2024 5-year
- Peak Democratic margin
- D+43 in 1912MIT Election Lab
- Peak Republican margin
- R+48 in 1904MIT Election Lab
- Most similar
- Mercer County, IL · similarity 0.97
2024 results by precinct
2024 precinct map of Marshall CountyPrecinct-level 2024 presidential results for Marshall County, with each precinct boundary colored by Democratic-vs-Republican margin.
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 782 | 1,288 | 2,109 | ||
| R | 858 | 1,287 | 2,178 | ||
| R | 754 | 1,056 | 1,947 | ||
| D | 1,061 | 889 | 1,987 | ||
| D | 1,261 | 900 | 2,191 | ||
| R | 1,099 | 1,242 | 2,364 | ||
| D | 1,097 | 939 | 2,079 | ||
| D | 1,185 | 861 | 2,246 | ||
| D | 1,056 | 810 | 2,297 | ||
| D | 1,372 | 1,142 | 2,525 | ||
| R | 1,111 | 1,529 | 2,649 | ||
| R | 1,120 | 1,710 | 3,001 | ||
| D | 1,721 | 1,233 | 2,967 | ||
| D | 1,646 | 1,500 | 3,147 | ||
| D | 1,518 | 1,471 | 3,129 | ||
| D | 2,063 | 1,183 | 3,246 | ||
| R | 1,674 | 1,704 | 3,378 | ||
| R | 1,758 | 2,382 | 4,140 | ||
| R | 1,135 | 2,248 | 3,383 | ||
| D | 1,710 | 1,419 | 3,198 | ||
| R | 1,363 | 1,511 | 2,874 | ||
| R | 1,972 | 1,989 | 3,961 | ||
| D | 2,220 | 1,105 | 3,387 | ||
| D | 2,137 | 935 | 3,446 | ||
| R | 1,315 | 1,858 | 3,252 | ||
| R | 190 | 1,271 | 2,466 | ||
| R | 266 | 1,557 | 2,782 | ||
| R | 808 | 885 | 1,773 | ||
| O | 541 | 0 | 1,256 | ||
| R | 453 | 874 | 1,470 | ||
| R | 292 | 996 | 1,466 | ||
| R | 728 | 829 | 1,596 | ||
| D | 694 | 553 | 1,263 | ||
| O | 114 | 477 | 1,085 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
46.3%
Irish
5.3%
English
3.9%
Polish
3.4%
American
1.3%
Sample size too small to break out by ancestry reliably.
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
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.
Age distribution by sex
Median age: 42.5 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
$78,156
Marshall County ranks in the top 25% of US counties.
Marshall County$78,156
South Dakota$75,081
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
6.1%
Child poverty is below the national average.
Children under 184.9%
Working age (18–64)6.5%
Seniors (65+)5.8%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
94.1%
speak English only
Spanish3.1%
Other Indo-European2.5%
Other languages0.3%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 30.5% of residents not counted as adherents by any reporting body.
Marshall County's roughly 4,500 residents are spread across glacial lake country near the North Dakota border, and its presidential contests have consistently produced double-digit Republican margins over the past several cycles.
The Republican margin in Marshall County reached its widest at forty-eight points in 1904. The margin in 2024 was twenty-four points, in line with the county's deep historical pattern.
Its loyalty is rooted in its place. Median household income of $78,156, a 85% non-Hispanic-white share, and a population of 4,344 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 Mercer County and Perry County.
Most similar counties
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Marshall County, South Dakota — The Long Memory. Akashic Intelligence — The Long Memory. https://akashic.app/county/46091/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in South Dakota
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Frequently asked questions
How did Marshall County, South Dakota vote in 2024?
In 2024, Marshall County, South Dakota voted Republican by 24.0 points (R+24), carried by the Republican candidate. Out of 2,109 votes cast, 782 went Democratic and 1,288 went Republican.
What is Marshall County, South Dakota's political archetype?
Akashic classifies Marshall County, South Dakota as a "Republican loyalist" county based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the county has voted Democratic 14 times, Republican 18 times, and other 2 times.
When did Marshall County, South Dakota last vote Democratic?
The most recent presidential election in which Marshall County, South Dakota voted Democratic was 2012.
How many people live in Marshall County, South Dakota?
Marshall County, South Dakota has a population of 4,344 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Marshall County, South Dakota?
Median household income in Marshall County, South Dakota is $78,156 — below the national median of $80,734. The South Dakota state median is $75,081.
What is the political history of Marshall County, South Dakota?
Akashic tracks 38 presidential elections in Marshall County, South Dakota from 1876 to 2024. Of those, 14 went Democratic and 18 went Republican. The county's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.