Henry County GIS Maps
Henry County, Illinois, has 49,284 residents and covers 823 square miles. The population declined 2.4% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Henry County is 17073.
Kewanee is the county's largest population center. Henry County also includes 16 zip codes, 11 public school districts and 43 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.
Henry County Trends
- Population
- 49,284▾
- Median Home Value
- $145,300▴
- K-12 Enrollment
- 9,447▾
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.
Henry 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.
Henry County Population
Henry County had 49,284 residents in 2020. That was 2.4% lower than in 2010. Henry County had 1,736 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 60 people per square mile. Some of the county's most populated postal areas include Kewanee, Geneseo and Colona.
Population Trend in Henry County IL
Henry County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Henry County Zip Codes
Henry County has 16 zip codes. Some of the county's most populated zip codes include Kewanee (61443), Geneseo (61254) and Colona (61241). Kewanee is the largest zip by population, with about 13,780 residents or 28% of the county total. Together, the three largest zips account for about 65% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Henry County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 61443 | Kewanee | 13,780 | ▾ -3.1% |
| 61254 | Geneseo | 11,587 | ▴ 1.5% |
| 61241 | Colona | 6,841 | ▾ -4% |
| 61273 | Orion | 3,227 | ▾ -2.7% |
| 61434 | Galva | 3,058 | ▾ -7.7% |
| Download all zip code data | |||
Henry County Zip Code populations and trends per most recent census data.
Henry County Demographics
Henry County has a median age of 43.4, which makes the county a little older than Illinois overall. About 22% of residents are under 18, while 21.2% 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 29.6% of the population, which points to a solid working-age base. About 24.3% of adults have a bachelor's degree or higher, above the statewide figure of 37.2%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Henry County IL
Median Age
43.4
Under 18
22%
Age 65+
21.2%
Bachelor's+
24.3%
Henry County School Districts
Henry County is served by 11 public school districts with 9,447 students enrolled in 2024. The largest districts on the county map are Geneseo Community Unit 228, Kewanee Community Unit 229 and Orion Community Unit 223. Those three districts account for about 57% 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 Henry County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Geneseo Community Unit School District 228 | 2,422 | 25.6% | ▾ -0.9% |
| Kewanee Community Unit School District 229 | 1,963 | 20.8% | ▾ -2.3% |
| Orion Community Unit School District 223 | 963 | 10.2% | ▾ -1.9% |
| Prophetstown-Lyndon-Tampico Community Unit School District 3 | 738 | 7.8% | ▾ -3.5% |
| ROWVA Community Unit School District 208 | 617 | 6.5% | ▴ 1% |
| Download all school district data | |||
Henry County school district enrollment and trends per most recent NCES reporting data.
Henry County Housing & Real Estate
Henry County has a median home value of $145,300 and a median gross rent of $837. About 80% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Illinois median, while rents come in below the state average. In March 2026, the median listing price was $187,450 and homes spent about 58 days on the market.
Henry County Housing Mix
Henry County housing mix: owner, renter and vacant units.
Henry County Housing Trends
Henry County median home value and rent trend (last 5 years).
Businesses in Henry County, IL
Henry County has 1,985 business listings across 438 categories. The largest categories in Henry County business listings are Churches & Religious Organizations (81, 4.1%), Gas Stations (34, 1.7%), and Public And Government Association (33, 1.7%). The full Henry County business listings dataset includes names, categories, addresses and contact details where available. Henry County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Henry County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 81 | 4.1% |
| Gas Stations | 34 | 1.7% |
| Public And Government Association | 33 | 1.7% |
| Parks & Recreation | 33 | 1.7% |
| Community & Nonprofits | 27 | 1.4% |
| Auto Repair | 27 | 1.4% |
| Convenience Stores | 27 | 1.4% |
| Insurance Agencies | 25 | 1.3% |
| Agricultural Service | 24 | 1.2% |
| Gyms & Fitness | 24 | 1.2% |
Henry County Business Listings
| Business | Category | City |
|---|---|---|
| Good Shepherd Foundation of Henry County | Abuse And Addiction Treatment | Geneseo |
| Jennings Funny Farm | Accommodation | Galva |
| Irwin Douglas W and Co | Accountant | Kewanee |
| MTJ Sports | Active Life | Kewanee |
| Lion's Den | Adult Entertainment | Atkinson |
| Virden Broadcasting | Advertising Agency | Kewanee |
| River Valley Co-Op | Agricultural Cooperatives | Geneseo |
| Roger Bates Garage | Agricultural Service | Kewanee |
| Wyffels Hybrids | Agriculture | Atkinson |
| The Works Air Care & Restoration | Air Duct Cleaning Service | Cleveland |
| Download Henry County business listings | ||
Henry County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Henry County Basemaps
Henry 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 Henry County Data Package
This page shows a preview of what's included in the Henry 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 Henry County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.