Marshall County GIS Maps
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Marshall County, South Dakota, has 4,306 residents and covers 838.1 square miles. The population declined 7.5% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Marshall County is 46091.
Britton is the county's largest population center. Marshall County also includes 6 zip codes, 3 public school districts and 47 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Marshall County Trends
- Population
- 4,306▾
- Median Home Value
- $147,200▴
- K-12 Enrollment
- 1,691▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Marshall County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Marshall County Population
Marshall County had 4,306 residents in 2020. That was 7.5% lower than in 2010. Marshall County had 270 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 5 people per square mile. Some of the county's most populated postal areas include Britton, Veblen and Langford.
Population Trend in Marshall County SD
Marshall County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Marshall County Zip Codes
Marshall County has 6 zip codes. Some of the county's most populated zip codes include Britton (57430), Veblen (57270) and Langford (57454). Britton is the largest zip by population, with about 2,123 residents or 49% of the county total. Together, the three largest zips account for about 76% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Marshall County SD
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 57430 | Britton | 2,123 | ▾ -5.4% |
| 57270 | Veblen | 619 | ▾ -31.5% |
| 57454 | Langford | 551 | ▾ -1.3% |
| 57247 | Lake City | 401 | ▴ 25.3% |
| 57232 | Eden | 327 | ▴ 9.4% |
| Download all zip code data | |||
Marshall County Zip Code populations and trends per most recent census data.
Marshall County Demographics
Marshall County has a median age of 42.8, which makes the county a little older than South Dakota overall. About 23.8% of residents are under 18, while 22.6% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is Under 18 at about 23.8% of the population, which suggests the county has a notable share of children and family households. About 22.4% of adults have a bachelor's degree or higher, above the statewide figure of 31.1%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Marshall County SD
Median Age
42.8
Under 18
23.8%
Age 65+
22.6%
Bachelor's+
22.4%
Marshall County School Districts
Marshall County is served by 3 public school districts with 1,691 students enrolled in 2024. The largest districts on the county map are Sisseton 54-2, Britton-Hecla 45-4 and Langford 45-5. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.
Largest School Districts by Enrollment in Marshall County SD
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Sisseton School District 54-2 | 965 | 57.1% | ▾ -0.5% |
| Britton-Hecla School District 45-4 | 468 | 27.7% | ▾ -2.5% |
| Langford School District 45-5 | 258 | 15.3% | ▴ 4.5% |
| Download all school district data | |||
Marshall County school district enrollment and trends per most recent NCES reporting data.
Marshall County Housing & Real Estate
Marshall County has a median home value of $147,200 and a median gross rent of $743. About 80% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the South Dakota median, while rents come in below the state average. In March 2026, the median listing price was $234,950 and homes spent about 145 days on the market.
Marshall County Housing Mix
Marshall County housing mix: owner, renter and vacant units.
Marshall County Housing Trends
Marshall County median home value and rent trend (last 5 years).
Businesses in Marshall County, SD
Marshall County has 238 business listings across 122 categories. The largest categories in Marshall County business listings are Lake (25, 10.5%), Churches & Religious Organizations (11, 4.6%), and Public And Government Association (6, 2.5%). The full Marshall County business listings dataset includes names, categories, addresses and contact details where available. Marshall County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Marshall County, SD
| Category | Businesses | Share |
|---|---|---|
| Lake | 25 | 10.5% |
| Churches & Religious Organizations | 11 | 4.6% |
| Public And Government Association | 6 | 2.5% |
| Agricultural Service | 6 | 2.5% |
| Skate Park | 5 | 2.1% |
| Bars & Nightlife | 5 | 2.1% |
| Public Service And Government | 5 | 2.1% |
| Banks & Credit Unions | 5 | 2.1% |
| Electrician | 4 | 1.7% |
| Shipping Center | 4 | 1.7% |
Marshall County Business Listings
| Business | Category | City |
|---|---|---|
| Buffalo Lakes | Active Life | Eden |
| IntelliFarms Northern Division | Agricultural Service | Britton |
| Southside Equipment and Feed | Agriculture | Britton |
| Britton Municipal Airport | Airport | Britton |
| Buffalo Lake Restaurant | American Restaurants | Eden |
| Painted Past | Antique Store | Britton |
| Roy View Country Club | Arts And Entertainment | Lake City |
| Vold Auctioneers & Realty | Auction House | Britton |
| Weber Body Shop | Auto Body Shop | Britton |
| American Family Insurance - Ryan Likness Agency, Inc | Auto Insurance | Britton |
| Download Marshall County business listings | ||
Marshall County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Marshall County Basemaps
Marshall County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Marshall County Data Package
This page shows a preview of what's included in the Marshall County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Marshall County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.