Pennington County GIS Maps
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Pennington County, South Dakota, has 109,222 residents and covers 2,776.8 square miles. The population grew 8.2% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Pennington County is 46103.
Rapid City is the county's largest population center. Pennington County also includes 9 zip codes, 6 public school districts and 55 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.
Pennington County Trends
- Population
- 109,222▴
- Median Home Value
- $270,400▴
- K-12 Enrollment
- 17,081▾
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.
Pennington 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.
Pennington County Population
Pennington County had 109,222 residents in 2020. That was 8.2% higher than in 2010. Pennington County added 20,657 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 39 people per square mile. Some of the county's most populated postal areas include Rapid City, Rapid City and Rapid City.
Population Trend in Pennington County SD
Pennington County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Pennington County Zip Codes
Pennington County has 9 zip codes. Some of the county's most populated zip codes include Rapid City (57701), Rapid City (57702) and Rapid City (57703). Rapid City is the largest zip by population, with about 46,258 residents or 42% of the county total. Together, the three largest zips account for about 88% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Pennington County SD
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 57701 | Rapid City | 46,258 | ▴ 6.4% |
| 57702 | Rapid City | 33,162 | ▴ 0.6% |
| 57703 | Rapid City | 16,933 | ▴ 19.2% |
| 57745 | Hill City | 2,078 | ▾ -1.5% |
| 57790 | Wall | 1,056 | ▾ -5% |
| Download all zip code data | |||
Pennington County Zip Code populations and trends per most recent census data.
Pennington County Demographics
Pennington County has a median age of 39.7, which makes the county a little older than South Dakota overall. About 22.2% of residents are under 18, while 19.6% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 29.9% of the population, which points to a solid working-age base. About 34.1% of adults have a bachelor's degree or higher, above the statewide figure of 31.1%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.
Key Demographics for Pennington County SD
Median Age
39.7
Under 18
22.2%
Age 65+
19.6%
Bachelor's+
34.1%
Pennington County School Districts
Pennington County is served by 6 public school districts with 17,081 students enrolled in 2024. The largest districts on the county map are Rapid City 51-4, Douglas 51-1 and Custer 16-1. Those three districts account for about 94% 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 Pennington County SD
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Rapid City School District 51-4 | 12,313 | 72.1% | ▾ -1% |
| Douglas School District 51-1 | 2,808 | 16.4% | ▴ 2% |
| Custer School District 16-1 | 887 | 5.2% | ▾ -2.1% |
| Hill City School District 51-2 | 520 | 3% | ▴ 2.4% |
| New Underwood School District 51-3 | 280 | 1.6% | ▴ 2.2% |
| Download all school district data | |||
Pennington County school district enrollment and trends per most recent NCES reporting data.
Pennington County Housing & Real Estate
Pennington County has a median home value of $270,400 and a median gross rent of $1,066. About 69% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the South Dakota median, while rents come in above the state average. In March 2026, the median listing price was $399,000 and homes spent about 45 days on the market.
Pennington County Housing Mix
Pennington County housing mix: owner, renter and vacant units.
Pennington County Housing Trends
Pennington County median home value and rent trend (last 5 years).
Businesses in Pennington County, SD
Pennington County has 6,643 business listings across 791 categories. The largest categories in Pennington County business listings are Medical Offices (155, 2.3%), Real Estate Agents (136, 2.0%), and Hotels (112, 1.7%). The full Pennington County business listings dataset includes names, categories, addresses and contact details where available. Pennington County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Pennington County, SD
| Category | Businesses | Share |
|---|---|---|
| Medical Offices | 155 | 2.3% |
| Real Estate Agents | 136 | 2.0% |
| Hotels | 112 | 1.7% |
| Landmark And Historical Building | 109 | 1.6% |
| Churches & Religious Organizations | 109 | 1.6% |
| Gas Stations | 97 | 1.5% |
| Contractors | 81 | 1.2% |
| Beauty Salons | 81 | 1.2% |
| Auto Repair | 77 | 1.2% |
| Convenience Stores | 69 | 1.0% |
Pennington County Business Listings
| Business | Category | City |
|---|---|---|
| Avantara Saint Cloud | Abuse And Addiction Treatment | Rapid City |
| Everspring Inn & Suites | Accommodation | Hill City |
| Desmet And Biggs | Accountant | Rapid City |
| Brunner & Beauvais | Active Life | Rapid City |
| Thrive Acupuncture and Wellness | Acupuncture | Rapid City |
| Drug Rehab Rapid City | Addiction Rehabilitation Center | Rapid City |
| Bethany Christian Services | Adoption Services | Rapid City |
| Belle Starr Gentlemen's Club | Adult Entertainment | Box Elder |
| Stec's Advertising Specialties and Safety Awards | Advertising Agency | Rapid City |
| CBH Co-op | Agricultural Cooperatives | Rapid City |
| Download Pennington County business listings | ||
Pennington County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Pennington County Basemaps
Pennington 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 Pennington County Data Package
This page shows a preview of what's included in the Pennington 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 Pennington County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.