Clay County GIS Maps
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Clay County, South Dakota, has 14,967 residents and covers 412 square miles. The population grew 8% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Clay County is 46027.
Vermillion is the county's largest population center. Clay County also includes 3 zip codes, 5 public school districts and 32 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.
Clay County Trends
- Population
- 14,967▴
- Median Home Value
- $221,800▴
- K-12 Enrollment
- 2,866▾
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.
Clay 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.
Clay County Population
Clay County had 14,967 residents in 2020. That was 8% higher than in 2010. Clay County added 1,430 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 36 people per square mile. Some of the county's most populated postal areas include Vermillion, Wakonda and Vermillion.
Population Trend in Clay County SD
Clay County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Clay County Zip Codes
Clay County has 3 zip codes. Some of the county's most populated zip codes include Vermillion (57069), Wakonda (57073) and Vermillion (57010). Vermillion is the largest zip by population, with about 13,005 residents or 87% of the county total. Together, the three largest zips account for about 95% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Clay County SD
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 57069 | Vermillion | 13,005 | ▴ 8.5% |
| 57073 | Wakonda | 610 | ▾ -14.2% |
| 57010 | Vermillion | 599 | ▴ 21.5% |
| Download all zip code data | |||
Clay County Zip Code populations and trends per most recent census data.
Clay County Demographics
Clay County has a median age of 24.5, which makes the county a little younger than South Dakota overall. About 17.6% of residents are under 18, while 12.2% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 18 to 24 at about 33.5% of the population, which suggests a younger adult population than many counties. About 46% 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 Clay County SD
Median Age
24.5
Under 18
17.6%
Age 65+
12.2%
Bachelor's+
46%
Clay County School Districts
Clay County is served by 5 public school districts with 2,866 students enrolled in 2024. The largest districts on the county map are Vermillion 13-1, Beresford 61-2 and Irene-Wakonda 13-3. Those three districts account for about 81% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.
Largest School Districts by Enrollment in Clay County SD
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Vermillion School District 13-1 | 1,381 | 48.2% | ▾ -3.6% |
| Beresford School District 61-2 | 648 | 22.6% | ▾ -3.6% |
| Irene-Wakonda School District 13-3 | 293 | 10.2% | ▴ 1% |
| Gayville-Volin School District 63-1 | 281 | 9.8% | ▾ -1.7% |
| Centerville School District 60-1 | 263 | 9.2% | ▾ -6.1% |
| Download all school district data | |||
Clay County school district enrollment and trends per most recent NCES reporting data.
Clay County Housing & Real Estate
Clay County has a median home value of $221,800 and a median gross rent of $736. About 52% 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 $376,475 and homes spent about 42 days on the market.
Clay County Housing Mix
Clay County housing mix: owner, renter and vacant units.
Clay County Housing Trends
Clay County median home value and rent trend (last 5 years).
Businesses in Clay County, SD
Clay County has 632 business listings across 266 categories. The largest categories in Clay County business listings are Churches & Religious Organizations (28, 4.4%), College University (16, 2.5%), and Hair Salons (11, 1.7%). The full Clay County business listings dataset includes names, categories, addresses and contact details where available. Clay County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Clay County, SD
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 28 | 4.4% |
| College University | 16 | 2.5% |
| Hair Salons | 11 | 1.7% |
| Social Service Organizations | 11 | 1.7% |
| Landmark And Historical Building | 11 | 1.7% |
| Gas Stations | 11 | 1.7% |
| Parks & Recreation | 10 | 1.6% |
| Community & Nonprofits | 9 | 1.4% |
| Fast Food | 8 | 1.3% |
| Insurance Agencies | 8 | 1.3% |
Clay County Business Listings
| Business | Category | City |
|---|---|---|
| University of South Dakota Bookstore | Academic Bookstore | Vermillion |
| Mickelson hall | Accommodation | Vermillion |
| Sydell | Agricultural Service | Burbank |
| Lodi Airport | Airport | Wakonda |
| Roadhouse | American Restaurants | Vermillion |
| Austree Apartments | Apartments | Vermillion |
| Murph's Appliances | Appliance Store | Vermillion |
| South Dakota Army National Guard Recruiting | Armed Forces Branch | Vermillion |
| Tigert Art Gallery | Art Gallery | Vermillion |
| Washington Street Arts Center | Arts And Entertainment | Vermillion |
| Download Clay County business listings | ||
Clay County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Clay County Basemaps
Clay 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 Clay County Data Package
This page shows a preview of what's included in the Clay 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 Clay County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.