Kendall County GIS Maps
Kendall County, Illinois, has 131,869 residents and covers 320.3 square miles. The population grew 14.9% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Kendall County is 17093.
Oswego is the county's largest population center. Kendall County also includes 8 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.
Kendall County Trends
- Population
- 131,869▴
- Median Home Value
- $298,900▴
- K-12 Enrollment
- 52,766▾
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.
Kendall 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.
Kendall County Population
Kendall County had 131,869 residents in 2020. That was 14.9% higher than in 2010. Kendall County added 77,325 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 412 people per square mile. Some of the county's most populated postal areas include Oswego, Montgomery and Yorkville.
Population Trend in Kendall County IL
Kendall County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Kendall County Zip Codes
Kendall County has 8 zip codes. Some of the county's most populated zip codes include Oswego (60543), Montgomery (60538) and Yorkville (60560). Oswego is the largest zip by population, with about 40,299 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 Kendall County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 60543 | Oswego | 40,299 | ▴ 11.5% |
| 60538 | Montgomery | 28,898 | ▴ 8.6% |
| 60560 | Yorkville | 27,185 | ▴ 21.3% |
| 60447 | Minooka | 15,750 | ▴ 14.9% |
| 60545 | Plano | 13,888 | ▴ 7.3% |
| Download all zip code data | |||
Kendall County Zip Code populations and trends per most recent census data.
Kendall County Demographics
Kendall County has a median age of 36, which makes the county a little younger than Illinois overall. About 27.5% of residents are under 18, while 11% 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 36.1% of the population, which points to a solid working-age base. About 36.4% 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 Kendall County IL
Median Age
36
Under 18
27.5%
Age 65+
11%
Bachelor's+
36.4%
Kendall County School Districts
Kendall County is served by 5 public school districts with 52,766 students enrolled in 2024. The largest districts on the county map are Plainfield 202, Oswego Community Unit 308 and Yorkville Community Unit 115. Those three districts account for about 92% 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 Kendall County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Plainfield School District 202 | 24,556 | 46.5% | ▾ -0.5% |
| Oswego Community Unit School District 308 | 16,766 | 31.8% | ▾ -0.5% |
| Yorkville Community Unit School District 115 | 7,174 | 13.6% | ▴ 0.8% |
| Plano Community Unit School District 88 | 2,398 | 4.5% | ▾ -1.5% |
| Sandwich Community Unit School District 430 | 1,872 | 3.5% | ▴ 1% |
| Download all school district data | |||
Kendall County school district enrollment and trends per most recent NCES reporting data.
Kendall County Housing & Real Estate
Kendall County has a median home value of $298,900 and a median gross rent of $1,763. About 84% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Illinois median, while rents come in above the state average. In March 2026, the median listing price was $434,450 and homes spent about 29 days on the market.
Kendall County Housing Mix
Kendall County housing mix: owner, renter and vacant units.
Kendall County Housing Trends
Kendall County median home value and rent trend (last 5 years).
Businesses in Kendall County, IL
Kendall County has 3,863 business listings across 610 categories. The largest categories in Kendall County business listings are Parks & Recreation (88, 2.3%), Contractors (68, 1.8%), and Real Estate Agents (64, 1.7%). The full Kendall County business listings dataset includes names, categories, addresses and contact details where available. Kendall County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Kendall County, IL
| Category | Businesses | Share |
|---|---|---|
| Parks & Recreation | 88 | 2.3% |
| Contractors | 68 | 1.8% |
| Real Estate Agents | 64 | 1.7% |
| Medical Offices | 63 | 1.6% |
| ATMs | 60 | 1.6% |
| Auto Repair | 58 | 1.5% |
| Beauty Salons | 57 | 1.5% |
| Churches & Religious Organizations | 56 | 1.4% |
| Gyms & Fitness | 51 | 1.3% |
| Fast Food | 49 | 1.3% |
Kendall County Business Listings
| Business | Category | City |
|---|---|---|
| Sable Ridge Subdivision | Accommodation | Joliet |
| Millennial Financial | Accountant | Oswego |
| Beecher Center | Active Life | Yorkville |
| Lovers Playground | Adult Entertainment | Aurora |
| Chicago Advertising & Marketing | Advertising Agency | Yorkville |
| Top Line Ag Inc | Agricultural Service | Newark |
| Grainco Fs | Agriculture | Newark |
| GRAINCO FS, Inc. | Agriculture Association | Newark |
| Allergy and Asthma Healthcare Clinic SC | Allergist | Yorkville |
| NSG Construction | Altering And Remodeling Contractor | Oswego |
| Download Kendall County business listings | ||
Kendall County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Kendall County Basemaps
Kendall 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 Kendall County Data Package
This page shows a preview of what's included in the Kendall 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 Kendall County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.