Sanborn County GIS Maps
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Sanborn County, South Dakota, has 2,330 residents and covers 569.3 square miles. The population declined 1.1% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Sanborn County is 46111.
Woonsocket is the county's largest population center. Sanborn County also includes 3 zip codes, 3 public school districts and 37 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.
Sanborn County Trends
- Population
- 2,330▾
- Median Home Value
- $138,500▴
- K-12 Enrollment
- 739▾
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.
Sanborn 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.
Sanborn County Population
Sanborn County had 2,330 residents in 2020. That was 1.1% lower than in 2010. Sanborn County had 345 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 4 people per square mile. Some of the county's most populated postal areas include Woonsocket, Artesian and Letcher.
Population Trend in Sanborn County SD
Sanborn County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Sanborn County Zip Codes
Sanborn County has 3 zip codes. Some of the county's most populated zip codes include Woonsocket (57385), Artesian (57314) and Letcher (57359). Woonsocket is the largest zip by population, with about 1,182 residents or 51% of the county total. Together, the three largest zips account for about 108% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Sanborn County SD
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 57385 | Woonsocket | 1,182 | ▾ -3.2% |
| 57314 | Artesian | 737 | ▴ 0.4% |
| 57359 | Letcher | 597 | ▾ -8% |
| Download all zip code data | |||
Sanborn County Zip Code populations and trends per most recent census data.
Sanborn County Demographics
Sanborn County has a median age of 38.6, which makes the county a little older than South Dakota overall. About 27.8% of residents are under 18, while 20% 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 27.8% of the population, which suggests the county has a notable share of children and family households. About 19.2% 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 Sanborn County SD
Median Age
38.6
Under 18
27.8%
Age 65+
20%
Bachelor's+
19.2%
Sanborn County School Districts
Sanborn County is served by 3 public school districts with 739 students enrolled in 2024. The largest districts on the county map are Woonsocket 55-4, Mount Vernon 17-3 and Sanborn Central 55-5. 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 Sanborn County SD
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Woonsocket School District 55-4 | 272 | 36.8% | ▾ -2.2% |
| Mount Vernon School District 17-3 | 255 | 34.5% | ▾ -4.1% |
| Sanborn Central School District 55-5 | 212 | 28.7% | ▾ -1.4% |
| Download all school district data | |||
Sanborn County school district enrollment and trends per most recent NCES reporting data.
Sanborn County Housing & Real Estate
Sanborn County has a median home value of $138,500 and a median gross rent of $717. About 78% 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 $31,000 and homes spent about 222 days on the market.
Sanborn County Housing Mix
Sanborn County housing mix: owner, renter and vacant units.
Sanborn County Housing Trends
Sanborn County median home value and rent trend (last 5 years).
Businesses in Sanborn County, SD
Sanborn County has 88 business listings across 55 categories. The largest categories in Sanborn County business listings are Veterinarians (5, 5.7%), Churches & Religious Organizations (5, 5.7%), and Convenience Stores (4, 4.5%). The full Sanborn County business listings dataset includes names, categories, addresses and contact details where available. Sanborn County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Sanborn County, SD
| Category | Businesses | Share |
|---|---|---|
| Veterinarians | 5 | 5.7% |
| Churches & Religious Organizations | 5 | 5.7% |
| Convenience Stores | 4 | 4.5% |
| Agricultural Service | 4 | 4.5% |
| Bars & Nightlife | 3 | 3.4% |
| Banks & Credit Unions | 3 | 3.4% |
| Public And Government Association | 3 | 3.4% |
| Post Offices | 2 | 2.3% |
| Pizza Restaurants | 2 | 2.3% |
| Beauty Salons | 2 | 2.3% |
Sanborn County Business Listings
| Business | Category | City |
|---|---|---|
| Agri-Dynamics LLC | Agricultural Service | Woonsocket |
| Buckshots Roadhouse | American Restaurants | Letcher |
| Lucky Bit Stay-bles & Arena | Amusement Park | Artesian |
| Dean Edwards Auction Co | Auction House | Artesian |
| KO's Pro Service and Towing | Auto Repair | Woonsocket |
| CorTrust Bank | Banks & Credit Unions | Artesian |
| First National Bank of Omaha | Banks | Woonsocket |
| Dorens Place | Bars & Nightlife | Artesian |
| Skeeters Bar & Grill | Bar And Grill Restaurant | Woonsocket |
| Lash Lounge by Jolyn | Beauty Salons | Artesian |
| Download Sanborn County business listings | ||
Sanborn County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Sanborn County Basemaps
Sanborn 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 Sanborn County Data Package
This page shows a preview of what's included in the Sanborn 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 Sanborn County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.