McLean County GIS Maps
McLean County, Illinois, has 170,954 residents and covers 1,183.2 square miles. The population grew 0.8% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for McLean County is 17113.
Bloomington is the county's largest population center. McLean County also includes 24 zip codes, 12 public school districts and 56 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.
McLean County Trends
- Population
- 170,954▴
- Median Home Value
- $198,300▴
- K-12 Enrollment
- 27,147▾
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.
McLean 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.
McLean County Population
McLean County had 170,954 residents in 2020. That was 0.8% higher than in 2010. McLean County added 20,521 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 144 people per square mile. Some of the county's most populated postal areas include Normal, Bloomington and Bloomington.
Population Trend in McLean County IL
McLean County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
McLean County Zip Codes
McLean County has 24 zip codes. Some of the county's most populated zip codes include Normal (61761), Bloomington (61704) and Bloomington (61701). Normal is the largest zip by population, with about 53,045 residents or 31% of the county total. Together, the three largest zips account for about 73% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in McLean County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 61761 | Normal | 53,045 | ▴ 0.3% |
| 61704 | Bloomington | 37,129 | ▴ 3.2% |
| 61701 | Bloomington | 34,497 | ▾ -4.5% |
| 61705 | Bloomington | 14,682 | ▴ 19.7% |
| 61745 | Heyworth | 4,331 | ▾ -1.7% |
| Download all zip code data | |||
McLean County Zip Code populations and trends per most recent census data.
McLean County Demographics
McLean County has a median age of 34.2, which makes the county a little younger than Illinois overall. About 21.5% of residents are under 18, while 14.2% 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 30.6% of the population, which points to a solid working-age base. About 46.9% of adults have a bachelor's degree or higher, above the statewide figure of 37.2%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.
Key Demographics for McLean County IL
Median Age
34.2
Under 18
21.5%
Age 65+
14.2%
Bachelor's+
46.9%
McLean County School Districts
McLean County is served by 12 public school districts with 27,147 students enrolled in 2024. The largest districts on the county map are McLean County Unit 5, Bloomington 87 and Olympia Community Unit 16. Those three districts account for about 70% 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 McLean County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| McLean County Unit School District 5 | 12,407 | 45.7% | ▾ -0.9% |
| Bloomington School District 87 | 4,809 | 17.7% | ▴ 1.6% |
| Olympia Community Unit School District 16 | 1,740 | 6.4% | ▾ -0.6% |
| Prairie Central Community Unit School District 8 | 1,712 | 6.3% | ▾ -0.6% |
| El Paso-Gridley Community Unit School District 11 | 1,135 | 4.2% | ▾ -3.5% |
| Download all school district data | |||
McLean County school district enrollment and trends per most recent NCES reporting data.
McLean County Housing & Real Estate
McLean County has a median home value of $198,300 and a median gross rent of $992. About 65% 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 $350,175 and homes spent about 40 days on the market.
McLean County Housing Mix
McLean County housing mix: owner, renter and vacant units.
McLean County Housing Trends
McLean County median home value and rent trend (last 5 years).
Businesses in McLean County, IL
McLean County has 7,197 business listings across 809 categories. The largest categories in McLean County business listings are Churches & Religious Organizations (174, 2.4%), Real Estate Agents (128, 1.8%), and Medical Offices (116, 1.6%). The full McLean County business listings dataset includes names, categories, addresses and contact details where available. McLean County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in McLean County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 174 | 2.4% |
| Real Estate Agents | 128 | 1.8% |
| Medical Offices | 116 | 1.6% |
| Community & Nonprofits | 92 | 1.3% |
| Parks & Recreation | 90 | 1.3% |
| ATMs | 90 | 1.3% |
| Auto Repair | 90 | 1.3% |
| Contractors | 86 | 1.2% |
| Insurance Agencies | 86 | 1.2% |
| Gyms & Fitness | 79 | 1.1% |
McLean County Business Listings
| Business | Category | City |
|---|---|---|
| Chestnut Health Systems | Abuse And Addiction Treatment | Bloomington |
| Nautical Bowls | Acai Bowls | Normal |
| SAMI Apartments | Accommodation | Normal |
| Sila Accounting | Accountant | Normal |
| Blm Normal Constitution Trail | Active Life | Bloomington |
| Ohm Energy Medicine | Acupuncture | Bloomington |
| Lovers Playground | Adult Entertainment | Bloomington |
| Picture This Outdoor Advertising | Advertising Agency | Bloomington |
| Illinois Farm Bureau | Agricultural Cooperatives | Bloomington |
| Atkins Seed Service | Agricultural Service | Chenoa |
| Download McLean County business listings | ||
McLean County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
McLean County Basemaps
McLean 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 McLean County Data Package
This page shows a preview of what's included in the McLean 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 McLean County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.