Hamilton County GIS Maps
Hamilton County, Illinois, has 7,993 residents across 10,197 parcels and covers 434.6 square miles. The population declined 5.5% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Hamilton County is 17065.
McLeansboro is the county's largest population center. Hamilton County also includes 4 zip codes, 6 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.
Hamilton County Trends
- Population
- 7,993▾
- Median Home Value
- $108,800▴
- K-12 Enrollment
- 3,960▾
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.
Hamilton 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.
Hamilton County Parcels
Hamilton County has 10,197 mapped parcels covering 278,467 acres. The median assessed value is $14,537. The median lot size is 20.00 acres. 5,306 parcels are 10 acres or larger. The records carry 5,305 distinct owner names. About 7% of parcels list an owner mailing address outside Illinois. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Hamilton County Parcel viewer here.
Hamilton County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 10,197 | 100% |
| Owner name | 10,183 | 99.9% |
| Owner mailing address | 10,183 | 99.9% |
| Site address | 10,183 | 99.9% |
| Land use code | 10,183 | 99.9% |
| Land use description | 0 | 0% |
| Assessed value | 10,183 | 99.9% |
| Land value | 10,183 | 99.9% |
| Improvement value | 10,183 | 99.9% |
| Acreage | 10,182 | 99.9% |
| Parcel boundary | 10,197 | 100% |
| Download all Hamilton County parcels. | ||
Field coverage measured across all Hamilton County parcel records.
Hamilton County Population
Hamilton County had 7,993 residents in 2020. That was 5.5% lower than in 2010. Hamilton County had 628 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 18 people per square mile. Some of the county's most populated postal areas include Mc Leansboro, Dahlgren and Broughton.
Population Trend in Hamilton County IL
Hamilton County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Hamilton County Zip Codes
Hamilton County has 4 zip codes. Some of the county's most populated zip codes include Mc Leansboro (62859), Dahlgren (62828) and Broughton (62817). Mc Leansboro is the largest zip by population, with about 5,346 residents or 67% of the county total. Together, the three largest zips account for about 90% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Hamilton County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 62859 | Mc Leansboro | 5,346 | ▾ -7% |
| 62828 | Dahlgren | 1,363 | ▾ -4.4% |
| 62817 | Broughton | 522 | ▾ -6.3% |
| 62829 | 62829 | 52 | ▾ -27.8% |
| Download all zip code data | |||
Hamilton County Zip Code populations and trends per most recent census data.
Hamilton County Demographics
Hamilton County has a median age of 43.5, which makes the county a little older than Illinois overall. About 22.7% of residents are under 18, while 22.2% 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 28.4% of the population, which points to a solid working-age base. About 18.5% 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 Hamilton County IL
Median Age
43.5
Under 18
22.7%
Age 65+
22.2%
Bachelor's+
18.5%
Hamilton County School Districts
Hamilton County is served by 6 public school districts with 3,960 students enrolled in 2024. The largest districts on the county map are Eldorado Community Unit 4, Hamilton County Community Unit 10 and Norris City-Omaha-Enfield Community Unit 3. Those three districts account for about 71% 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 Hamilton County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Eldorado Community Unit School District 4 | 1,105 | 27.9% | ▴ 1.7% |
| Hamilton County Community Unit School District 10 | 1,091 | 27.6% | ▾ -2.2% |
| Norris City-Omaha-Enfield Community Unit School District 3 | 611 | 15.4% | ▾ -0.5% |
| Wayne City Community Unit School District 100 | 477 | 12% | ▾ -2.9% |
| Galatia Community Unit School District 1 | 382 | 9.6% | ▴ 2.1% |
| Download all school district data | |||
Hamilton County school district enrollment and trends per most recent NCES reporting data.
Hamilton County Housing & Real Estate
Hamilton County has a median home value of $108,800 and a median gross rent of $566. About 78% 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 $114,250 and homes spent about 91 days on the market.
Hamilton County Housing Mix
Hamilton County housing mix: owner, renter and vacant units.
Hamilton County Housing Trends
Hamilton County median home value and rent trend (last 5 years).
Businesses in Hamilton County, IL
Hamilton County has 306 business listings across 162 categories. The largest categories in Hamilton County business listings are Churches & Religious Organizations (15, 4.9%), Baptist Church (9, 2.9%), and Public And Government Association (9, 2.9%). The full Hamilton County business listings dataset includes names, categories, addresses and contact details where available. Hamilton County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Hamilton County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 15 | 4.9% |
| Baptist Church | 9 | 2.9% |
| Public And Government Association | 9 | 2.9% |
| Insurance Agencies | 8 | 2.6% |
| Post Offices | 7 | 2.3% |
| Farm | 6 | 2.0% |
| Banks & Credit Unions | 6 | 2.0% |
| Hardware Stores | 5 | 1.6% |
| Auto Repair | 5 | 1.6% |
| Lake | 4 | 1.3% |
Hamilton County Business Listings
| Business | Category | City |
|---|---|---|
| Hamilton Memorial Rehabilitation and Health Care Center | Abuse And Addiction Treatment | McLeansboro |
| Monroe Accounting Solutions Co. | Accountant | McLeansboro |
| Henderson Enterprise | Agricultural Service | McLeansboro |
| Bunge-SCF Grain | Agriculture | McLeansboro |
| Deep South | American Restaurants | McLeansboro |
| McLeansboro Animal Shelter | Animal Shelters | McLeansboro |
| Appliance Service Unlimited Of Middleton, Inc | Appliance Store | Middleton |
| Christopher Hall Appraisals | Appraisal Services | McLeansboro |
| Siamese Dreams | Art Gallery | McLeansboro |
| Heritage Woods of McLeansboro | Assisted Living Facility | Mc Leansboro |
| Download Hamilton County business listings | ||
Hamilton County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Hamilton County Basemaps
Hamilton 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 Hamilton County Data Package
This page shows a preview of what's included in the Hamilton 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 Hamilton County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.