Boone County GIS Maps
Boone County, Illinois, has 53,448 residents and covers 280.8 square miles. The population declined 1.3% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Boone County is 17007.
Belvidere is the county's largest population center. Boone County also includes 5 zip codes, 5 public school districts and 22 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.
Boone County Trends
- Population
- 53,448▾
- Median Home Value
- $198,600▴
- K-12 Enrollment
- 40,419▴
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.
Boone 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.
Boone County Population
Boone County had 53,448 residents in 2020. That was 1.3% lower than in 2010. Boone County added 11,662 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 190 people per square mile. Some of the county's most populated postal areas include Belvidere, Poplar Grove and Caledonia.
Population Trend in Boone County IL
Boone County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Boone County Zip Codes
Boone County has 5 zip codes. Some of the county's most populated zip codes include Belvidere (61008), Poplar Grove (61065) and Caledonia (61011). Belvidere is the largest zip by population, with about 33,747 residents or 63% 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 Boone County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 61008 | Belvidere | 33,747 | ▾ -1.6% |
| 61065 | Poplar Grove | 11,206 | ▴ 0.4% |
| 61011 | Caledonia | 2,899 | ▾ -1.6% |
| 61012 | Capron | 2,160 | ▾ -0.7% |
| 61038 | Garden Prairie | 1,175 | ▾ -13.2% |
| Download all zip code data | |||
Boone County Zip Code populations and trends per most recent census data.
Boone County Demographics
Boone County has a median age of 39.5, which makes the county a little older than Illinois overall. About 24.2% of residents are under 18, while 16.4% 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 29.9% of the population, which points to a solid working-age base. About 23.2% of adults have a bachelor's degree or higher, above the statewide figure of 37.2%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Boone County IL
Median Age
39.5
Under 18
24.2%
Age 65+
16.4%
Bachelor's+
23.2%
Boone County School Districts
Boone County is served by 5 public school districts with 40,419 students enrolled in 2024. The largest districts on the county map are Rockford 205, Belvidere Consolidated Unit 100 and Harvard Community Unit 50. Those three districts account for about 95% 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 Boone County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Rockford School District 205 | 28,467 | 70.4% | ▴ 2.9% |
| Belvidere Consolidated Unit School District 100 | 7,523 | 18.6% | ▴ 0.7% |
| Harvard Community Unit School District 50 | 2,532 | 6.3% | ▴ 1.3% |
| North Boone Community Unit School District 200 | 1,470 | 3.6% | ▾ -2.6% |
| Hiawatha Community Unit School District 426 | 427 | 1.1% | ▴ 0.2% |
| Download all school district data | |||
Boone County school district enrollment and trends per most recent NCES reporting data.
Boone County Housing & Real Estate
Boone County has a median home value of $198,600 and a median gross rent of $1,011. About 83% 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 $352,153 and homes spent about 55 days on the market.
Boone County Housing Mix
Boone County housing mix: owner, renter and vacant units.
Boone County Housing Trends
Boone County median home value and rent trend (last 5 years).
Businesses in Boone County, IL
Boone County has 1,465 business listings across 414 categories. The largest categories in Boone County business listings are Churches & Religious Organizations (44, 3.0%), Auto Repair (35, 2.4%), and Gas Stations (29, 2.0%). The full Boone County business listings dataset includes names, categories, addresses and contact details where available. Boone County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Boone County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 44 | 3.0% |
| Auto Repair | 35 | 2.4% |
| Gas Stations | 29 | 2.0% |
| Farm | 28 | 1.9% |
| Contractors | 23 | 1.6% |
| Parks & Recreation | 23 | 1.6% |
| Medical Offices | 21 | 1.4% |
| Convenience Stores | 19 | 1.3% |
| Beauty Salons | 19 | 1.3% |
| Insurance Agencies | 19 | 1.3% |
Boone County Business Listings
| Business | Category | City |
|---|---|---|
| Brightside Clinic | Abuse And Addiction Treatment | Belvidere |
| Inverness Subdivision | Accommodation | Loves Park |
| Keeley | Accountant | Caledonia |
| 9 Iron | Active Life | Belvidere |
| Conserv FS | Agricultural Cooperatives | Caledonia |
| The DeLong Co. Inc. | Agricultural Service | Garden Prairie |
| Doetch Farms | Agriculture | Poplar Grove |
| Poplar Grove Airmotive | Airport | Poplar Grove |
| Instyle Limousine inc. | Airport Shuttles | Belvidere |
| Tom & Jerry's Restaurant | American Restaurants | Belvidere |
| Download Boone County business listings | ||
Boone County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Boone County Basemaps
Boone 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 Boone County Data Package
This page shows a preview of what's included in the Boone 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 Boone County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.