Buchanan County GIS Maps
Buchanan County, Missouri, has 84,793 residents and covers 408.2 square miles. The population declined 4.9% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Buchanan County is 29021.
St. Joseph is the county's largest population center. Buchanan County also includes 10 zip codes, 5 public school districts and 27 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.
Buchanan County Trends
- Population
- 84,793▾
- Median Home Value
- $156,600▴
- K-12 Enrollment
- 12,843▾
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.
Buchanan 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.
Buchanan County Population
Buchanan County had 84,793 residents in 2020. That was 4.9% lower than in 2010. Buchanan County had 1,205 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 208 people per square mile. Some of the county's most populated postal areas include Saint Joseph, Saint Joseph and Saint Joseph.
Population Trend in Buchanan County MO
Buchanan County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Buchanan County Zip Codes
Buchanan County has 10 zip codes. Some of the county's most populated zip codes include Saint Joseph (64506), Saint Joseph (64507) and Saint Joseph (64503). Saint Joseph is the largest zip by population, with about 22,828 residents or 27% of the county total. Together, the three largest zips account for about 58% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Buchanan County MO
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 64506 | Saint Joseph | 22,828 | ▾ -5% |
| 64507 | Saint Joseph | 14,133 | ▴ 2.9% |
| 64503 | Saint Joseph | 12,127 | ▾ -6.1% |
| 64501 | Saint Joseph | 11,020 | ▾ -11.9% |
| 64504 | Saint Joseph | 10,033 | ▾ -6.8% |
| Download all zip code data | |||
Buchanan County Zip Code populations and trends per most recent census data.
Buchanan County Demographics
Buchanan County has a median age of 38.9, which is close to the Missouri average. About 22.4% of residents are under 18, while 17.1% 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 31.5% of the population, which points to a solid working-age base. About 23.3% of adults have a bachelor's degree or higher, above the statewide figure of 31.9%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Buchanan County MO
Median Age
38.9
Under 18
22.4%
Age 65+
17.1%
Bachelor's+
23.3%
Buchanan County School Districts
Buchanan County is served by 5 public school districts with 12,843 students enrolled in 2024. The largest districts on the county map are St. Joseph, Mid-Buchanan County R-V and East Buchanan County C-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 Buchanan County MO
| District | Enrollment | Share | Trend |
|---|---|---|---|
| St. Joseph School District | 10,430 | 81.2% | ▾ -0.4% |
| Mid-Buchanan County R-V School District | 891 | 6.9% | ▾ -0.8% |
| East Buchanan County C-1 School District | 689 | 5.4% | ▾ -6.1% |
| North Platte County R-I School District | 556 | 4.3% | ▴ 1.1% |
| Buchanan County R-IV School District | 277 | 2.2% | ▾ -5.1% |
| Download all school district data | |||
Buchanan County school district enrollment and trends per most recent NCES reporting data.
Buchanan County Housing & Real Estate
Buchanan County has a median home value of $156,600 and a median gross rent of $889. About 65% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Missouri median, while rents come in below the state average. In March 2026, the median listing price was $189,950 and homes spent about 47 days on the market.
Buchanan County Housing Mix
Buchanan County housing mix: owner, renter and vacant units.
Buchanan County Housing Trends
Buchanan County median home value and rent trend (last 5 years).
Businesses in Buchanan County, MO
Buchanan County has 3,794 business listings across 657 categories. The largest categories in Buchanan County business listings are Churches & Religious Organizations (97, 2.6%), Insurance Agencies (83, 2.2%), and Gas Stations (76, 2.0%). The full Buchanan County business listings dataset includes names, categories, addresses and contact details where available. Buchanan County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Buchanan County, MO
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 97 | 2.6% |
| Insurance Agencies | 83 | 2.2% |
| Gas Stations | 76 | 2.0% |
| Auto Repair | 59 | 1.6% |
| Real Estate Agents | 51 | 1.3% |
| Medical Offices | 48 | 1.3% |
| Convenience Stores | 46 | 1.2% |
| Landmark And Historical Building | 46 | 1.2% |
| Fast Food | 41 | 1.1% |
| ATMs | 41 | 1.1% |
Buchanan County Business Listings
| Business | Category | City |
|---|---|---|
| St. Joseph Safety and Health Council | Abuse And Addiction Treatment | St Joseph |
| Hummingbird Hill Agency, MO | Accommodation | Agency |
| Thompson and Associates | Accountant | St Joseph |
| Heritage Park Softball Complex | Active Life | St Joseph |
| Jeff Rippey Acupuncture | Acupuncture | St Joseph |
| Alcoholics Anonymous | Addiction Rehabilitation Center | Saint Joseph |
| Cirilla's | Adult Entertainment | St Joseph |
| Smokers Hub | Adult Store | Saint Joseph |
| Marks Media | Advertising Agency | St Joseph |
| VitaFerm | Agricultural Cooperatives | St Joseph |
| Download Buchanan County business listings | ||
Buchanan County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Buchanan County Basemaps
Buchanan 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 Buchanan County Data Package
This page shows a preview of what's included in the Buchanan 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 Buchanan County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.