Henderson County GIS Maps
Henderson County, Illinois, has 6,387 residents and covers 378.8 square miles. The population declined 12.9% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Henderson County is 17071.
Oquawka is the county's largest population center. Henderson County also includes 8 zip codes, 3 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.
Henderson County Trends
- Population
- 6,387▾
- Median Home Value
- $101,600▴
- K-12 Enrollment
- 3,034▴
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.
Henderson 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.
Henderson County Population
Henderson County had 6,387 residents in 2020. That was 12.9% lower than in 2010. Henderson County had 1,826 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 17 people per square mile. Some of the county's most populated postal areas include Oquawka, Stronghurst and Biggsville.
Population Trend in Henderson County IL
Henderson County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Henderson County Zip Codes
Henderson County has 8 zip codes. Some of the county's most populated zip codes include Oquawka (61469), Stronghurst (61480) and Biggsville (61418). Oquawka is the largest zip by population, with about 1,802 residents or 28% of the county total. Together, the three largest zips account for about 58% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Henderson County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 61469 | Oquawka | 1,802 | ▾ -17.5% |
| 61480 | Stronghurst | 1,242 | ▾ -6.2% |
| 61418 | Biggsville | 677 | ▴ 0.6% |
| 61437 | Gladstone | 663 | ▾ -18.9% |
| 61454 | Lomax | 641 | ▾ -11.6% |
| Download all zip code data | |||
Henderson County Zip Code populations and trends per most recent census data.
Henderson County Demographics
Henderson County has a median age of 49.8, which makes the county a little older than Illinois overall. About 18.9% of residents are under 18, while 26.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 65 and over at about 26.7% of the population, which points to an older population profile. About 19.2% 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 Henderson County IL
Median Age
49.8
Under 18
18.9%
Age 65+
26.7%
Bachelor's+
19.2%
Henderson County School Districts
Henderson County is served by 3 public school districts with 3,034 students enrolled in 2024. The largest districts on the county map are Mercer County 404, United Community 304 and West Central Community Unit 235. 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 Henderson County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Mercer County School District 404 | 1,274 | 42% | ▴ 0.7% |
| United Community School District 304 | 1,008 | 33.2% | ▴ 6.2% |
| West Central Community Unit School District 235 | 752 | 24.8% | ▾ -1.1% |
| Download all school district data | |||
Henderson County school district enrollment and trends per most recent NCES reporting data.
Henderson County Housing & Real Estate
Henderson County has a median home value of $101,600 and a median gross rent of $834. About 86% 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 $119,925 and homes spent about 33 days on the market.
Henderson County Housing Mix
Henderson County housing mix: owner, renter and vacant units.
Henderson County Housing Trends
Henderson County median home value and rent trend (last 5 years).
Businesses in Henderson County, IL
Henderson County has 196 business listings across 112 categories. The largest categories in Henderson County business listings are Churches & Religious Organizations (9, 4.6%), Post Offices (8, 4.1%), and Public And Government Association (7, 3.6%). The full Henderson County business listings dataset includes names, categories, addresses and contact details where available. Henderson County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Henderson County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 9 | 4.6% |
| Post Offices | 8 | 4.1% |
| Public And Government Association | 7 | 3.6% |
| Insurance Agencies | 6 | 3.1% |
| Bars & Nightlife | 5 | 2.6% |
| Banks & Credit Unions | 4 | 2.0% |
| Bar And Grill Restaurant | 4 | 2.0% |
| Landmark And Historical Building | 4 | 2.0% |
| Retirement Home | 4 | 2.0% |
| Fire Departments | 4 | 2.0% |
Henderson County Business Listings
| Business | Category | City |
|---|---|---|
| Charlie's Angels | Adult Entertainment | Carman |
| GoblinPocket | Advertising Agency | Dallas City |
| Cessford Construction Company, a CRH Company | Aggregate Supplier | Biggsville |
| Frontline Genetics | Agricultural Service | Stronghurst |
| H & H Feed | Agriculture | Stronghurst |
| Jenni's Ice Cream and Grill | American Restaurants | Lomax |
| Crane Hill Antiques | Antique Store | Lomax |
| Stronghurst Collision and Repair | Auto Body Shop | Stronghurst |
| Tharp's Splash & Dash Car Wash | Auto Detailing | Oquawka |
| Porter-Hay Insurance | Auto Insurance | Oquawka |
| Download Henderson County business listings | ||
Henderson County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Henderson County Basemaps
Henderson 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 Henderson County Data Package
This page shows a preview of what's included in the Henderson 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 Henderson County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.