Iroquois County GIS Maps
Iroquois County, Illinois, has 27,077 residents across 28,185 parcels and covers 1,117.4 square miles. The population declined 8.9% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Iroquois County is 17075.
Watseka is the county's largest population center. Iroquois County also includes 23 zip codes, 12 public school districts and 46 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.
Iroquois County Trends
- Population
- 27,077▾
- Median Home Value
- $125,400▴
- K-12 Enrollment
- 8,232▾
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.
Iroquois 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.
Iroquois County Parcels
Iroquois County has 28,185 mapped parcels covering 715,456 acres. The median assessed value is $28,663. The median lot size is 33.15 acres. 10,227 parcels are 10 acres or larger. The records carry 16,128 distinct owner names. Owner names reach 97.9%. Site addresses reach 52.5%. Browse the interactive Iroquois County Parcel viewer here.
Iroquois County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 28,185 | 100% |
| Owner name | 27,593 | 97.9% |
| Owner mailing address | 0 | 0% |
| Site address | 14,789 | 52.5% |
| Land use code | 27,596 | 97.9% |
| Land use description | 0 | 0% |
| Assessed value | 26,179 | 92.9% |
| Land value | 0 | 0% |
| Improvement value | 0 | 0% |
| Acreage | 27,596 | 97.9% |
| Parcel boundary | 28,185 | 100% |
| Download all Iroquois County parcels. | ||
Field coverage measured across all Iroquois County parcel records.
Iroquois County Population
Iroquois County had 27,077 residents in 2020. That was 8.9% lower than in 2010. Iroquois County had 4,257 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 24 people per square mile. Some of the county's most populated postal areas include Watseka, Clifton and Milford.
Population Trend in Iroquois County IL
Iroquois County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Iroquois County Zip Codes
Iroquois County has 23 zip codes. Some of the county's most populated zip codes include Watseka (60970), Clifton (60927) and Milford (60953). Watseka is the largest zip by population, with about 6,306 residents or 23% of the county total. Together, the three largest zips account for about 39% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Iroquois County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 60970 | Watseka | 6,306 | ▾ -12.3% |
| 60927 | Clifton | 2,226 | ▾ -7.4% |
| 60953 | Milford | 2,113 | ▾ -14.4% |
| 60938 | Gilman | 2,080 | ▾ -2.4% |
| 60955 | Onarga | 1,828 | ▾ -3.8% |
| Download all zip code data | |||
Iroquois County Zip Code populations and trends per most recent census data.
Iroquois County Demographics
Iroquois County has a median age of 44.4, which makes the county a little older than Illinois overall. About 21.7% 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 27.5% of the population, which points to a solid working-age base. About 16.7% 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 Iroquois County IL
Median Age
44.4
Under 18
21.7%
Age 65+
22.2%
Bachelor's+
16.7%
Iroquois County School Districts
Iroquois County is served by 12 public school districts with 8,232 students enrolled in 2024. The largest districts on the county map are Herscher Community Unit 2, Paxton-Buckley-Loda Community Unit 10 and Hoopeston Area Community Unit 11. Those three districts account for about 48% 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 Iroquois County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Herscher Community Unit School District 2 | 1,686 | 20.5% | ▴ 0.5% |
| Paxton-Buckley-Loda Community Unit School District 10 | 1,230 | 14.9% | ▾ -0.6% |
| Hoopeston Area Community Unit School District 11 | 1,064 | 12.9% | ▾ -3.5% |
| Central Community Unit School District 4 | 968 | 11.8% | ▾ -1% |
| Iroquois County Community Unit School District 9 | 939 | 11.4% | ▴ 3.5% |
| Download all school district data | |||
Iroquois County school district enrollment and trends per most recent NCES reporting data.
Iroquois County Housing & Real Estate
Iroquois County has a median home value of $125,400 and a median gross rent of $793. About 79% 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 $158,400 and homes spent about 108 days on the market.
Iroquois County Housing Mix
Iroquois County housing mix: owner, renter and vacant units.
Iroquois County Housing Trends
Iroquois County median home value and rent trend (last 5 years).
Businesses in Iroquois County, IL
Iroquois County has 1,232 business listings across 347 categories. The largest categories in Iroquois County business listings are Churches & Religious Organizations (57, 4.6%), Gas Stations (29, 2.4%), and Post Offices (29, 2.4%). The full Iroquois County business listings dataset includes names, categories, addresses and contact details where available. Iroquois County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Iroquois County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 57 | 4.6% |
| Gas Stations | 29 | 2.4% |
| Post Offices | 29 | 2.4% |
| Auto Repair | 28 | 2.3% |
| Bars & Nightlife | 23 | 1.9% |
| Agricultural Service | 21 | 1.7% |
| Insurance Agencies | 20 | 1.6% |
| Elementary School | 18 | 1.5% |
| Farm | 17 | 1.4% |
| Parks & Recreation | 17 | 1.4% |
Iroquois County Business Listings
| Business | Category | City |
|---|---|---|
| Iroquois Print & Sign Design | 3D Printing Service | Onarga |
| La Bella of Clifton | Abuse And Addiction Treatment | Clifton |
| Brammer Bros. Farms | Accommodation | Donovan |
| Williams Tony CPA | Accountant | Watseka |
| Park Avenue Gym | Active Life | Watseka |
| Milford Chiropractic Clinic | Acupuncture | Milford |
| The Lion's Den | Adult Store | Buckley |
| Kidco Designs Custom Embroidery & Vinyl Graphics | Advertising Agency | Gilman |
| Heritage FS | Agricultural Cooperatives | Beaverville |
| Zumwalt Aviation | Agricultural Service | Sheldon |
| Download Iroquois County business listings | ||
Iroquois County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Iroquois County Basemaps
Iroquois 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 Iroquois County Data Package
This page shows a preview of what's included in the Iroquois 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 Iroquois County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.