Posey County GIS Maps
Posey County, Indiana, has 25,222 residents and covers 409.4 square miles. The population declined 2.7% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Posey County is 18129.
Mount Vernon is the county's largest population center. Posey County also includes 4 zip codes, 2 public school districts and 22 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.
Posey County Trends
- Population
- 25,222▾
- Median Home Value
- $218,000▴
- K-12 Enrollment
- 3,454▾
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.
Posey 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.
Posey County Population
Posey County had 25,222 residents in 2020. That was 2.7% lower than in 2010. Posey County had 1,839 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 62 people per square mile. Some of the county's most populated postal areas include Mount Vernon, Wadesville and Poseyville.
Population Trend in Posey County IN
Posey County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Posey County Zip Codes
Posey County has 4 zip codes. Some of the county's most populated zip codes include Mount Vernon (47620), Wadesville (47638) and Poseyville (47633). Mount Vernon is the largest zip by population, with about 12,989 residents or 51% of the county total. Together, the three largest zips account for about 76% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Posey County IN
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 47620 | Mount Vernon | 12,989 | ▾ -3.3% |
| 47638 | Wadesville | 3,620 | ▴ 1.2% |
| 47633 | Poseyville | 2,455 | ▾ -3.4% |
| 47631 | New Harmony | 1,908 | ▾ -6.6% |
| Download all zip code data | |||
Posey County Zip Code populations and trends per most recent census data.
Posey County Demographics
Posey County has a median age of 43.1, which makes the county a little older than Indiana overall. About 22.1% of residents are under 18, while 20.3% 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 29.2% of the population, which points to a solid working-age base. About 25.3% 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 Posey County IN
Median Age
43.1
Under 18
22.1%
Age 65+
20.3%
Bachelor's+
25.3%
Posey County School Districts
Posey County is served by 2 public school districts with 3,454 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. 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 Posey County IN
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Mount Vernon Metropolitan School District | 1,999 | 57.9% | ▾ -3% |
| North Posey County Schools Metropolitan School District | 1,455 | 42.1% | ▾ -1.5% |
| Download all school district data | |||
Posey County school district enrollment and trends per most recent NCES reporting data.
Posey County Housing & Real Estate
Posey County has a median home value of $218,000 and a median gross rent of $744. About 82% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Indiana median, while rents come in below the state average. In March 2026, the median listing price was $242,450 and homes spent about 65 days on the market.
Posey County Housing Mix
Posey County housing mix: owner, renter and vacant units.
Posey County Housing Trends
Posey County median home value and rent trend (last 5 years).
Businesses in Posey County, IN
Posey County has 835 business listings across 287 categories. The largest categories in Posey County business listings are Churches & Religious Organizations (52, 6.2%), Parks & Recreation (17, 2.0%), and Auto Repair (17, 2.0%). The full Posey County business listings dataset includes names, categories, addresses and contact details where available. Posey County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Posey County, IN
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 52 | 6.2% |
| Parks & Recreation | 17 | 2.0% |
| Auto Repair | 17 | 2.0% |
| Community & Nonprofits | 17 | 2.0% |
| Public And Government Association | 15 | 1.8% |
| Gas Stations | 13 | 1.6% |
| Landmark And Historical Building | 13 | 1.6% |
| Insurance Agencies | 11 | 1.3% |
| Farm | 11 | 1.3% |
| Antique Store | 11 | 1.3% |
Posey County Business Listings
| Business | Category | City |
|---|---|---|
| St. Wendel Knights Home | Accommodation | Wadesville |
| Schneider and Evans | Accountant | Mt Vernon |
| Diamond Island Stables | Active Life | Wadesville |
| Grow Marketing Solutions | Advertising Agency | Wadesville |
| Posey County Farm Bureau Co-Op | Agricultural Cooperatives | Griffin |
| ATI, Inc. | Agricultural Service | Mt Vernon |
| Posey Patch Ultralightport | Airport | Mt Vernon |
| Silver Bell Restaurant | American Restaurants | Wadesville |
| Paws Petcation LLC | Animal Shelters | Evansville |
| Antique Emporium | Antique Store | New Harmony |
| Download Posey County business listings | ||
Posey County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Posey County Basemaps
Posey 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 Posey County Data Package
This page shows a preview of what's included in the Posey 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 Posey County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.