Marshall County, South Dakota Demographics 2026

Name: Marshall County, South Dakota Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Marshall County, South Dakota has a population of 4,344, the 37th most populous county in South Dakota. The median household income is $78,156 and the median home value is $156,500. The poverty rate is 6.1%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Marshall County Quick Facts

Population 4,344

Median Household Income $78,156

Median Home Value $156,500

Poverty Rate 6.1%

Unemployment Rate 0.3%

Median Age 42.5 years

Homeownership Rate 80.3%

Affordability Ratio 2.0x

Bachelor's Degree+ 25.4%

High School Graduation 92.4%

Cities/Places 8

Population 4,344 37th of 66

Median Income $78,156 4% higher than state

Poverty Rate 6.1%

Unemployment 0.3%

How Marshall County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	4,355	4,344	-0.3%
Median household income	$72,500	$78,156	+7.8%
Median home value	$147,200	$156,500	+6.3%

Median Household Income

Marshall

$78,156

$75,081

National

$80,734

Median Home Value

Marshall

$156,500

$257,400

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 11.9%

$25K-$50K 19.0%

$50K-$100K 32.5%

$100K+ 36.6%

Detailed income brackets

Under $10K

1.7%

$10K-$15K

3.5%

$15K-$20K

2.7%

$20K-$25K

3.9%

$25K-$30K

1.5%

$30K-$35K

5.7%

$35K-$40K

7.8%

$40K-$45K

0.9%

$45K-$50K

3.1%

$50K-$60K

6.0%

$60K-$75K

11.7%

$75K-$100K

14.8%

$100K-$125K

11.5%

$125K-$150K

8.7%

$150K-$200K

7.9%

$200K+

8.5%

Employment

0.3% Unemployment Rate State: 2.9%|National: 5.2%

63.8% Labor Force Participation

Housing Overview

Owner 80.3%

Renter 19.7%

Affordability Index Very Affordable

2.0x home value to income ratio

Median gross rent $752/mo 11.5% of median household income annually

People & Demographics

Age Distribution

Under 18

24.3%

18-34

16.9%

35-54

20.6%

55-74

28.9%

75+

9.2%

Race & Ethnicity

Diversity Index

Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 35 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Marshall County

City	Population	Median Income	Poverty	Home Value
Britton	988	$62,898	9.0%	$110,200
Langford	481	$79,375	0.6%	$125,000
Veblen	455	$64,167	14.1%	$43,700
Eden	221	N/A	1.4%	N/A
Sunset Colony	68	N/A	100.0%	N/A
Clear Lake	41	$18,750	51.2%	N/A
Lake City	40	$41,563	0.0%	$109,400
Kidder	8	N/A	0.0%	N/A

Explore South Dakota Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Marshall County is located in South Dakota with a total population of 4,344. It is the 37th most populous county out of 66 in South Dakota. The county encompasses 8 Census-designated places.

Age Demographics

The median age in Marshall County is 42.5 years. This is 12% higher than the state median of 38.0 years.

Economy, Income & Housing

The median household income in Marshall County is $78,156. This is 4% higher than the state median of $75,081. It is also 3% lower than the national median of $80,734. The poverty rate stands at 6.1%. This is 49% lower than the state poverty rate of 11.9%. The unemployment rate is 0.3%. This is 89% lower than the state rate of 2.9%. The median home value is $156,500. Housing costs are 39% lower than the state median of $257,400. With a home-value-to-income ratio of just 2.0x, Marshall County is one of the most affordable housing markets in the area. 80.3% of occupied housing units are owner-occupied. This homeownership rate is 17% higher than the state average of 68.6%.

Race & Ethnicity

The largest racial or ethnic group in Marshall County is White (non-Hispanic), making up 83.7% of the population. Hispanic or Latino residents account for 6.4%. The Black or African American population (0.1%) is well below the state average of 2.1%. The Asian population (0.2%) is well below the state average of 1.4%.

Education

25.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% lower than the state rate of 31.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.4%.

Data Sources & Methodology

All figures for Marshall County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against South Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Marshall County, South Dakota?

Marshall County has a population of 4,344, making it the 37th most populous county in South Dakota.

What is the median income in Marshall County?

The median household income in Marshall County is $78,156 with a poverty rate of 6.1%.

How many cities are in Marshall County, South Dakota?

Marshall County contains 8 Census-designated places.