St. Joseph County GIS Maps
St. Joseph County, Indiana, has 272,912 residents and covers 457.9 square miles. The population grew 2.2% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for St. Joseph County is 18141.
South Bend is the county's largest population center. St. Joseph County also includes 20 zip codes, 6 public school districts and 28 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.
St. Joseph County Trends
- Population
- 272,912▴
- Median Home Value
- $179,800▴
- K-12 Enrollment
- 35,934▾
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.
St. Joseph 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.
St. Joseph County Population
St. Joseph County had 272,912 residents in 2020. That was 2.2% higher than in 2010. St. Joseph County added 7,353 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 596 people per square mile. Some of the county's most populated postal areas include Granger, Mishawaka and South Bend.
Population Trend in St. Joseph County IN
St. Joseph County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
St. Joseph County Zip Codes
St. Joseph County has 20 zip codes. Some of the county's most populated zip codes include Granger (46530), Mishawaka (46544) and South Bend (46614). Granger is the largest zip by population, with about 31,805 residents or 12% of the county total. Together, the three largest zips account for about 34% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in St. Joseph County IN
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 46530 | Granger | 31,805 | ▴ 3.9% |
| 46544 | Mishawaka | 31,571 | ▴ 2.6% |
| 46614 | South Bend | 29,917 | ▴ 1.2% |
| 46628 | South Bend | 27,011 | ▴ 5.3% |
| 46545 | Mishawaka | 26,312 | ▴ 4.9% |
| Download all zip code data | |||
St. Joseph County Zip Code populations and trends per most recent census data.
St. Joseph County Demographics
St. Joseph County has a median age of 36.7, which makes the county a little younger than Indiana overall. About 23.3% of residents are under 18, while 16.5% 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% of the population, which points to a solid working-age base. About 32.6% of adults have a bachelor's degree or higher, above the statewide figure of 28.8%. 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 St. Joseph County IN
Median Age
36.7
Under 18
23.3%
Age 65+
16.5%
Bachelor's+
32.6%
St. Joseph County School Districts
St. Joseph County is served by 6 public school districts with 35,934 students enrolled in 2024. The largest districts on the county map are South Bend Community School Corporation, Penn-Harris-Madison School Corporation and Mishawaka School City. Those three districts account for about 83% 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 St. Joseph County IN
| District | Enrollment | Share | Trend |
|---|---|---|---|
| South Bend Community School Corporation | 13,569 | 37.8% | ▾ -6% |
| Penn-Harris-Madison School Corporation | 11,329 | 31.5% | ▾ -1.8% |
| Mishawaka School City | 5,007 | 13.9% | ▾ -0.5% |
| New Prairie United School Corporation | 2,815 | 7.8% | ▾ -1.2% |
| John Glenn School Corporation | 1,993 | 5.5% | ▾ -0.4% |
| Download all school district data | |||
St. Joseph County school district enrollment and trends per most recent NCES reporting data.
St. Joseph County Housing & Real Estate
St. Joseph County has a median home value of $179,800 and a median gross rent of $1,030. About 69% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Indiana median, while rents come in below the state average. In March 2026, the median listing price was $299,450 and homes spent about 45 days on the market.
St. Joseph County Housing Mix
St. Joseph County housing mix: owner, renter and vacant units.
St. Joseph County Housing Trends
St. Joseph County median home value and rent trend (last 5 years).
Businesses in St. Joseph County, IN
St. Joseph County has 10,718 business listings across 906 categories. The largest categories in St. Joseph County business listings are Churches & Religious Organizations (281, 2.6%), Medical Offices (186, 1.7%), and ATMs (164, 1.5%). The full St. Joseph County business listings dataset includes names, categories, addresses and contact details where available. St. Joseph County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in St. Joseph County, IN
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 281 | 2.6% |
| Medical Offices | 186 | 1.7% |
| ATMs | 164 | 1.5% |
| Auto Repair | 156 | 1.5% |
| Insurance Agencies | 153 | 1.4% |
| Parks & Recreation | 133 | 1.2% |
| Gas Stations | 132 | 1.2% |
| Community & Nonprofits | 130 | 1.2% |
| Contractors | 121 | 1.1% |
| Real Estate Agents | 119 | 1.1% |
St. Joseph County Business Listings
| Business | Category | City |
|---|---|---|
| BellTower Health and Rehabilitation Center | Abuse And Addiction Treatment | Mishawaka |
| Indiana University South Bend Bookstore | Academic Bookstore | South Bend |
| Irish Flats | Accommodation | South Bend |
| DWC CPAs | Accountant | South Bend |
| Potato Creek Public Beach | Active Life | Saint Joseph County |
| Dr. Natalie Kilheeney | Acupuncture | Granger |
| New Directions at Memorial Hospital | Addiction Rehabilitation Center | South Bend |
| Holy Family Catholic Adoption Agency | Adoption Services | South Bend |
| Romantix | Adult Entertainment | South Bend |
| Alpha Dog Agency | Advertising Agency | South Bend |
| Download St. Joseph County business listings | ||
St. Joseph County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Get the Full St. Joseph County Data Package
This page shows a preview of what's included in the St. Joseph 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 St. Joseph County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.