Grant County GIS Maps
Grant County, Indiana, has 66,674 residents and covers 414.1 square miles. The population declined 4.8% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Grant County is 18053.
Marion is the county's largest population center. Grant County also includes 12 zip codes, 5 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.
Grant County Trends
- Population
- 66,674▾
- Median Home Value
- $116,000▴
- K-12 Enrollment
- 11,257▾
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.
Grant 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.
Grant County Population
Grant County had 66,674 residents in 2020. That was 4.8% lower than in 2010. Grant County had 6,729 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 161 people per square mile. Some of the county's most populated postal areas include Marion, Marion and Gas City.
Population Trend in Grant County IN
Grant County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Grant County Zip Codes
Grant County has 12 zip codes. Some of the county's most populated zip codes include Marion (46953), Marion (46952) and Gas City (46933). Marion is the largest zip by population, with about 22,781 residents or 34% of the county total. Together, the three largest zips account for about 73% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Grant County IN
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 46953 | Marion | 22,781 | ▾ -5.8% |
| 46952 | Marion | 18,996 | ▾ -6.5% |
| 46933 | Gas City | 6,617 | ▴ 3.2% |
| 46989 | Upland | 5,028 | ▾ -3.2% |
| 46928 | Fairmount | 4,557 | ▾ -8% |
| Download all zip code data | |||
Grant County Zip Code populations and trends per most recent census data.
Grant County Demographics
Grant County has a median age of 39.3, which makes the county a little older than Indiana overall. About 21.4% of residents are under 18, while 18.9% 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 27.1% of the population, which points to a solid working-age base. About 20.4% of adults have a bachelor's degree or higher, above the statewide figure of 28.8%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Grant County IN
Median Age
39.3
Under 18
21.4%
Age 65+
18.9%
Bachelor's+
20.4%
Grant County School Districts
Grant County is served by 5 public school districts with 11,257 students enrolled in 2024. The largest districts on the county map are Marion Community Schools, Mississinewa Community School Corporation and Madison-Grant United School Corporation. Those three districts account for about 72% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.
Largest School Districts by Enrollment in Grant County IN
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Marion Community Schools | 3,668 | 32.6% | ▾ -0.1% |
| Mississinewa Community School Corporation | 2,453 | 21.8% | ▴ 0.7% |
| Madison-Grant United School Corporation | 2,024 | 18% | ▴ 1.8% |
| Eastbrook Community School Corporation | 1,579 | 14% | ▾ -2.6% |
| Oak Hill United School Corporation | 1,533 | 13.6% | ▾ -5% |
| Download all school district data | |||
Grant County school district enrollment and trends per most recent NCES reporting data.
Grant County Housing & Real Estate
Grant County has a median home value of $116,000 and a median gross rent of $799. About 72% 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 $158,975 and homes spent about 63 days on the market.
Grant County Housing Mix
Grant County housing mix: owner, renter and vacant units.
Grant County Housing Trends
Grant County median home value and rent trend (last 5 years).
Businesses in Grant County, IN
Grant County has 2,698 business listings across 495 categories. The largest categories in Grant County business listings are Churches & Religious Organizations (131, 4.9%), Gas Stations (60, 2.2%), and Medical Offices (51, 1.9%). The full Grant County business listings dataset includes names, categories, addresses and contact details where available. Grant County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Grant County, IN
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 131 | 4.9% |
| Gas Stations | 60 | 2.2% |
| Medical Offices | 51 | 1.9% |
| Auto Repair | 44 | 1.6% |
| Landmark And Historical Building | 43 | 1.6% |
| ATMs | 40 | 1.5% |
| Community & Nonprofits | 35 | 1.3% |
| Fast Food | 33 | 1.2% |
| Convenience Stores | 32 | 1.2% |
| Hospitals | 32 | 1.2% |
Grant County Business Listings
| Business | Category | City |
|---|---|---|
| Community Medical Services | Abuse And Addiction Treatment | Marion |
| IWU Campus Store | Academic Bookstore | Marion |
| Serenity Farm-Garrett's | Accommodation | Converse |
| DWD CPAs & Advisors | Accountant | Marion |
| Academy Sports Performance & Training | Active Life | Gas City |
| Addiction Rehab Marion | Addiction Rehabilitation Center | Marion |
| Rebel Dolls Cabaret | Adult Entertainment | Marion |
| Redline Equipment Gas City | Agricultural Service | Gas City |
| Matthews Feed & Grain | Agriculture | Matthews |
| Stoffer Aviation LLC | Aircraft Dealer | Marion |
| Download Grant County business listings | ||
Grant County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Grant County Basemaps
Grant 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 Grant County Data Package
This page shows a preview of what's included in the Grant 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 Grant County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.