Adams County GIS Maps
Adams County, Indiana, has 35,809 residents across 19,794 parcels and covers 339 square miles. The population grew 4.1% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Adams County is 18001.
Decatur is the county's largest population center. Adams County also includes 4 zip codes, 3 public school districts and 26 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 parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Adams County Trends
- Population
- 35,809▴
- Median Home Value
- $173,100▴
- K-12 Enrollment
- 4,240▾
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.
Adams 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.
Adams County Parcels
Adams County has 19,796 mapped parcels covering 217,420 acres. The median lot size is 4.81 acres. 4,766 parcels are 10 acres or larger. Vacant land accounts for 21.5% of parcels. Cash grain/general farm follows at 12.7%. The records carry 13,774 distinct owner names. About 3% of parcels list an owner mailing address outside Indiana. Owner names, mailing addresses, site addresses and lot sizes are on nearly every parcel. Browse the interactive Adams County Parcel viewer here.
Adams County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 19,794 | 100% |
| Owner name | 19,662 | 99.3% |
| Owner mailing address | 19,662 | 99.3% |
| Site address | 19,662 | 99.3% |
| Land use code | 19,664 | 99.3% |
| Land use description | 19,664 | 99.3% |
| Assessed value | 0 | 0% |
| Land value | 0 | 0% |
| Improvement value | 0 | 0% |
| Acreage | 19,664 | 99.3% |
| Parcel boundary | 19,794 | 100% |
| Download all Adams County parcels. | ||
Field coverage measured across all Adams County parcel records.
Adams County Population
Adams County had 35,809 residents in 2020. That was 4.1% higher than in 2010. Adams County added 2,184 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 106 people per square mile. Some of the county's most populated postal areas include Decatur, Berne and Geneva.
Population Trend in Adams County IN
Adams County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Adams County Zip Codes
Adams County has 4 zip codes. Some of the county's most populated zip codes include Decatur (46733), Berne (46711) and Geneva (46740). Decatur is the largest zip by population, with about 18,669 residents or 52% of the county total. Together, the three largest zips account for about 87% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Adams County IN
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 46733 | Decatur | 18,669 | ▾ -0.6% |
| 46711 | Berne | 8,022 | ▴ 4.2% |
| 46740 | Geneva | 4,608 | ▴ 13.5% |
| 46772 | Monroe | 3,929 | ▴ 15.2% |
| Download all zip code data | |||
Adams County Zip Code populations and trends per most recent census data.
Adams County Demographics
Adams County has a median age of 33.2, which makes the county a little younger than Indiana overall. About 31.2% of residents are under 18, while 16% 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 31.2% of the population, which suggests the county has a notable share of children and family households. About 15.2% 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 Adams County IN
Median Age
33.2
Under 18
31.2%
Age 65+
16%
Bachelor's+
15.2%
Adams County School Districts
Adams County is served by 3 public school districts with 4,240 students enrolled in 2024. The largest districts on the county map are North Adams Community Schools, Adams Central Community Schools and South Adams Schools. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.
Largest School Districts by Enrollment in Adams County IN
| District | Enrollment | Share | Trend |
|---|---|---|---|
| North Adams Community Schools | 1,571 | 37.1% | ▾ -0.5% |
| Adams Central Community Schools | 1,357 | 32% | ▾ -0.2% |
| South Adams Schools | 1,312 | 30.9% | ▴ 0.3% |
| Download all school district data | |||
Adams County school district enrollment and trends per most recent NCES reporting data.
Adams County Housing & Real Estate
Adams County has a median home value of $173,100 and a median gross rent of $799. About 82% 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 $251,225 and homes spent about 53 days on the market.
Adams County Housing Mix
Adams County housing mix: owner, renter and vacant units.
Adams County Housing Trends
Adams County median home value and rent trend (last 5 years).
Businesses in Adams County, IN
Adams County has 1,186 business listings across 347 categories. The largest categories in Adams County business listings are Churches & Religious Organizations (56, 4.7%), Auto Repair (28, 2.4%), and Gas Stations (20, 1.7%). The full Adams County business listings dataset includes names, categories, addresses and contact details where available. Adams County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Adams County, IN
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 56 | 4.7% |
| Auto Repair | 28 | 2.4% |
| Gas Stations | 20 | 1.7% |
| Landmark And Historical Building | 19 | 1.6% |
| Car Dealerships | 18 | 1.5% |
| Pizza Restaurants | 17 | 1.4% |
| Community & Nonprofits | 17 | 1.4% |
| Beauty Salons | 16 | 1.3% |
| Insurance Agencies | 16 | 1.3% |
| Banks & Credit Unions | 14 | 1.2% |
Adams County Business Listings
| Business | Category | City |
|---|---|---|
| Fresh New Start | Abuse And Addiction Treatment | Decatur |
| Chalet Village III | Accommodation | Berne |
| Cochran Rebecca CPA | Accountant | Decatur |
| Fitness Delivered | Active Life | Decatur |
| Personal Touch Specialties & Gifts | Advertising Agency | Decatur |
| E & R Seeds | Agricultural Seed Store | Monroe |
| Lehman Feed Mill | Agricultural Service | Berne |
| Bunge North America | Agriculture | Decatur |
| Decatur Hi-Way Airport | Airport | Decatur |
| West End Restaurant | American Restaurants | Decatur |
| Download Adams County business listings | ||
Adams County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Adams County Basemaps
Adams 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 Adams County Data Package
This page shows a preview of what's included in the Adams 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 parcels, 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 Adams County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.