Simpson County GIS Maps
Simpson County, Kentucky, has 19,594 residents and covers 234.2 square miles. The population grew 13.1% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Simpson County is 21213.
Franklin is the county's largest population center. Simpson County also includes 1 zip code, 1 public school district and 12 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.
Simpson County Trends
- Population
- 19,594▴
- Median Home Value
- $195,700▴
- K-12 Enrollment
- 3,080▴
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.
Simpson 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.
Simpson County Population
Simpson County had 19,594 residents in 2020. That was 13.1% higher than in 2010. Simpson County added 3,189 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 84 people per square mile. One of the county's most populated postal areas is Franklin.
Population Trend in Simpson County KY
Simpson County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Simpson County Zip Codes
Simpson County has 1 zip codes. One of the county's most populated zip codes is Franklin (42134). Franklin is the largest zip by population, with about 18,881 residents or 96% of the county total. Together, the three largest zips account for about 96% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Simpson County KY
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 42134 | Franklin | 18,881 | ▴ 12.5% |
| Download all zip code data | |||
Simpson County Zip Code populations and trends per most recent census data.
Simpson County Demographics
Simpson County has a median age of 39, which is close to the Kentucky average. About 23.5% 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 25 to 44 at about 30.3% of the population, which points to a solid working-age base. About 16.8% of adults have a bachelor's degree or higher, above the statewide figure of 27%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Simpson County KY
Median Age
39
Under 18
23.5%
Age 65+
16%
Bachelor's+
16.8%
Simpson County School Districts
Simpson County is served by 1 public school district with 3,080 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 Simpson County KY
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Simpson County School District | 3,080 | 100% | ▴ 1% |
| Download all school district data | |||
Simpson County school district enrollment and trends per most recent NCES reporting data.
Simpson County Housing & Real Estate
Simpson County has a median home value of $195,700 and a median gross rent of $1,011. About 66% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Kentucky median, while rents come in above the state average. In March 2026, the median listing price was $282,473 and homes spent about 67 days on the market.
Simpson County Housing Mix
Simpson County housing mix: owner, renter and vacant units.
Simpson County Housing Trends
Simpson County median home value and rent trend (last 5 years).
Businesses in Simpson County, KY
Simpson County has 902 business listings across 308 categories. The largest categories in Simpson County business listings are Churches & Religious Organizations (29, 3.2%), Auto Repair (25, 2.8%), and Gas Stations (24, 2.7%). The full Simpson County business listings dataset includes names, categories, addresses and contact details where available. Simpson County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Simpson County, KY
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 29 | 3.2% |
| Auto Repair | 25 | 2.8% |
| Gas Stations | 24 | 2.7% |
| Baptist Church | 22 | 2.4% |
| Fast Food | 17 | 1.9% |
| Hotels | 14 | 1.6% |
| Farm | 14 | 1.6% |
| Contractors | 13 | 1.4% |
| Beauty Salons | 12 | 1.3% |
| Convenience Stores | 11 | 1.2% |
Simpson County Business Listings
| Business | Category | City |
|---|---|---|
| Hope Haven | Abuse And Addiction Treatment | Franklin |
| Woodland Apartments | Accommodation | Franklin |
| Jackson Hewitt Tax Service | Accountant | Franklin |
| Southern States Simpson Cooperative | Agricultural Cooperatives | Franklin |
| Gold City Feed Mill | Agricultural Service | Franklin |
| Hudson Grain Company | Agriculture | Franklin |
| Welcome Field | Airport | Franklin |
| County Line Mobile Media Blasting | Altering And Remodeling Contractor | Franklin |
| Firestorm Baseball | Amateur Sports Team | Franklin |
| Franklin Simpson County Ambulance Service | Ambulance And Ems Services | Franklin |
| Download Simpson County business listings | ||
Simpson County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Simpson County Basemaps
Simpson 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 Simpson County Data Package
This page shows a preview of what's included in the Simpson 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 Simpson County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.