McDonough County GIS Maps
McDonough County, Illinois, has 27,238 residents and covers 589.4 square miles. The population declined 16.5% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for McDonough County is 17109.
Macomb is the county's largest population center. McDonough County also includes 10 zip codes, 6 public school districts and 36 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.
McDonough County Trends
- Population
- 27,238▾
- Median Home Value
- $103,500▴
- K-12 Enrollment
- 4,849▾
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.
McDonough 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.
McDonough County Population
McDonough County had 27,238 residents in 2020. That was 16.5% lower than in 2010. McDonough County had 5,675 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 46 people per square mile. Some of the county's most populated postal areas include Macomb, Bushnell and Colchester.
Population Trend in McDonough County IL
McDonough County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
McDonough County Zip Codes
McDonough County has 10 zip codes. Some of the county's most populated zip codes include Macomb (61455), Bushnell (61422) and Colchester (62326). Macomb is the largest zip by population, with about 17,630 residents or 65% of the county total. Together, the three largest zips account for about 84% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in McDonough County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 61455 | Macomb | 17,630 | ▾ -20.2% |
| 61422 | Bushnell | 3,099 | ▾ -9.3% |
| 62326 | Colchester | 2,255 | ▾ -9% |
| 61420 | Blandinsville | 964 | ▾ -9.7% |
| 61438 | Good Hope | 709 | ▾ -6.7% |
| Download all zip code data | |||
McDonough County Zip Code populations and trends per most recent census data.
McDonough County Demographics
McDonough County has a median age of 35.1, which makes the county a little younger than Illinois overall. About 17.9% of residents are under 18, while 19.3% 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 26.3% of the population, which points to a solid working-age base. About 31.8% 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 McDonough County IL
Median Age
35.1
Under 18
17.9%
Age 65+
19.3%
Bachelor's+
31.8%
McDonough County School Districts
McDonough County is served by 6 public school districts with 4,849 students enrolled in 2024. The largest districts on the county map are Macomb Community Unit 185, Schuyler-Industry Community Unit 5 and Bushnell-Prairie City Community Unit 170. Those three districts account for about 73% 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 McDonough County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Macomb Community Unit School District 185 | 2,075 | 42.8% | ▴ 3.4% |
| Schuyler-Industry Community Unit School District 5 | 843 | 17.4% | ▾ -10.8% |
| Bushnell-Prairie City Community Unit School District 170 | 602 | 12.4% | ▾ -0.8% |
| West Prairie Community Unit School District 103 | 573 | 11.8% | ▾ -2.9% |
| Southeastern Community Unit School District 337 | 429 | 8.8% | ▾ -5.1% |
| Download all school district data | |||
McDonough County school district enrollment and trends per most recent NCES reporting data.
McDonough County Housing & Real Estate
McDonough County has a median home value of $103,500 and a median gross rent of $730. About 62% 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 $94,650 and homes spent about 100 days on the market.
McDonough County Housing Mix
McDonough County housing mix: owner, renter and vacant units.
McDonough County Housing Trends
McDonough County median home value and rent trend (last 5 years).
Businesses in McDonough County, IL
McDonough County has 1,305 business listings across 386 categories. The largest categories in McDonough County business listings are Churches & Religious Organizations (41, 3.1%), College University (26, 2.0%), and Community & Nonprofits (21, 1.6%). The full McDonough County business listings dataset includes names, categories, addresses and contact details where available. McDonough County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in McDonough County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 41 | 3.1% |
| College University | 26 | 2.0% |
| Community & Nonprofits | 21 | 1.6% |
| Insurance Agencies | 21 | 1.6% |
| Landmark And Historical Building | 19 | 1.5% |
| Farm | 19 | 1.5% |
| Hair Salons | 18 | 1.4% |
| Pizza Restaurants | 17 | 1.3% |
| Beauty Salons | 17 | 1.3% |
| Auto Repair | 17 | 1.3% |
McDonough County Business Listings
| Business | Category | City |
|---|---|---|
| The Elms | Abuse And Addiction Treatment | Macomb |
| Thompson Hall | Accommodation | Macomb |
| Groutage Bookkeeping Company | Accountant | Bushnell |
| Lamoine Ramblers Motorcycle Club | Active Life | Macomb |
| Midwest Grass & Forage | Agricultural Cooperatives | Macomb |
| Farm King | Agricultural Service | Macomb |
| Western Grain Marketing | Agriculture | Adair |
| Macomb Municipal Airport | Airport | Macomb |
| Air Evac Base 144 | Ambulance And Ems Services | Macomb |
| Highway Family Restaurant | American Restaurants | Bushnell |
| Download McDonough County business listings | ||
McDonough County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
McDonough County Basemaps
McDonough 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 McDonough County Data Package
This page shows a preview of what's included in the McDonough 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 McDonough County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.