Bennett County GIS Maps

Bennett 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.

Bennett County Population

Bennett County had 3,381 residents in 2020. That was 1.5% lower than in 2010. Bennett County had 193 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 3 people per square mile. Some of the county's most populated postal areas include Martin, Allen and Martin.

Population Trend in Bennett County SD

Bennett County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Bennett County Zip Codes

Bennett County has 3 zip codes. Some of the county's most populated zip codes include Martin (57551), Allen (57714) and Martin (57574). Martin is the largest zip by population, with about 2,232 residents or 66% of the county total. Together, the three largest zips account for about 92% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Bennett County SD

Bennett County Zip Code populations and trends per most recent census data.

Bennett County Demographics

Bennett County has a median age of 28.8, which makes the county a little younger than South Dakota overall. About 34.4% of residents are under 18, while 15.3% 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 34.4% of the population, which suggests the county has a notable share of children and family households. About 20.3% of adults have a bachelor's degree or higher, above the statewide figure of 31.1%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.

Key Demographics for Bennett County SD

Bennett County School Districts

Bennett County is served by 1 public school district with 442 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.

Largest School Districts by Enrollment in Bennett County SD

Bennett County school district enrollment and trends per most recent NCES reporting data.

Bennett County Housing & Real Estate

Bennett County has a median home value of $138,600 and a median gross rent of $616. About 58% 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 $262,000 and homes spent about 179 days on the market.

Businesses in Bennett County, SD

Bennett County has 102 business listings across 75 categories. The largest categories in Bennett County business listings are Churches & Religious Organizations (5, 4.9%), Elementary School (4, 3.9%), and Public And Government Association (4, 3.9%). The full Bennett County business listings dataset includes names, categories, addresses and contact details where available. Bennett County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Bennett County, SD

Bennett County Business Listings

Bennett County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Bennett County Basemaps

Bennett 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.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from South Dakota — explore the full structure before you buy.