Brown County GIS Maps
Brown County, Illinois, has 6,244 residents and covers 305.7 square miles. The population declined 10% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Brown County is 17009.
Mount Sterling is the county's largest population center. Brown County also includes 3 zip codes, 1 public school district 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.
Brown County Trends
- Population
- 6,244▾
- Median Home Value
- $142,200▴
- K-12 Enrollment
- 673▾
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.
Brown 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.
Brown County Population
Brown County had 6,244 residents in 2020. That was 10% lower than in 2010. Brown County had 706 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 20 people per square mile. Some of the county's most populated postal areas include Mount Sterling, Versailles and Timewell.
Population Trend in Brown County IL
Brown County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Brown County Zip Codes
Brown County has 3 zip codes. Some of the county's most populated zip codes include Mount Sterling (62353), Versailles (62378) and Timewell (62375). Mount Sterling is the largest zip by population, with about 5,093 residents or 82% of the county total. Together, the three largest zips account for about 100% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Brown County IL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 62353 | Mount Sterling | 5,093 | ▾ -9.7% |
| 62378 | Versailles | 793 | ▾ -11.5% |
| 62375 | Timewell | 341 | ▾ -7.6% |
| Download all zip code data | |||
Brown County Zip Code populations and trends per most recent census data.
Brown County Demographics
Brown County has a median age of 40.9, which makes the county a little older than Illinois overall. About 17.4% of residents are under 18, while 16.2% 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 38.4% of the population, which points to a solid working-age base. About 15.1% 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 Brown County IL
Median Age
40.9
Under 18
17.4%
Age 65+
16.2%
Bachelor's+
15.1%
Brown County School Districts
Brown County is served by 1 public school district with 673 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% 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 Brown County IL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Brown County Community Unit School District 1 | 673 | 100% | ▾ -2.5% |
| Download all school district data | |||
Brown County school district enrollment and trends per most recent NCES reporting data.
Brown County Housing & Real Estate
Brown County has a median home value of $142,200 and a median gross rent of $724. About 74% 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 $315,000 and homes spent about 119 days on the market.
Brown County Housing Mix
Brown County housing mix: owner, renter and vacant units.
Brown County Housing Trends
Brown County median home value and rent trend (last 5 years).
Businesses in Brown County, IL
Brown County has 210 business listings across 132 categories. The largest categories in Brown County business listings are Churches & Religious Organizations (9, 4.3%), Insurance Agencies (5, 2.4%), and Auto Repair (5, 2.4%). The full Brown County business listings dataset includes names, categories, addresses and contact details where available. Brown County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Brown County, IL
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 9 | 4.3% |
| Insurance Agencies | 5 | 2.4% |
| Auto Repair | 5 | 2.4% |
| Beauty Salons | 4 | 1.9% |
| Contractors | 4 | 1.9% |
| Hair Salons | 4 | 1.9% |
| Banks & Credit Unions | 4 | 1.9% |
| Flowers & Gifts | 4 | 1.9% |
| Medical Center | 3 | 1.4% |
| Antique Store | 3 | 1.4% |
Brown County Business Listings
| Business | Category | City |
|---|---|---|
| Raymond James Financial Services | Accountant | Mount Sterling |
| Bucks R Us Outfitters | Active Life | Versailles |
| Mt. Sterling Implement Co. | Agricultural Service | Mt Sterling |
| Mt. Sterling Municipal Airport | Airport | Mt Sterling |
| Brown County Fairgrounds | Ambulance And Ems Services | Mount Sterling |
| Red Star Antiques N' More | Antique Store | Mt Sterling |
| Coin Cloud Bitcoin ATM | ATMs | Mt Sterling |
| Mowen Auto Body | Auto Body Shop | Mt Sterling |
| Main Street Repair Inc. | Auto Repair | Mt Sterling |
| NAPA Auto Parts | Auto Parts And Supply Store | Mt Sterling |
| Download Brown County business listings | ||
Brown County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Brown County Basemaps
Brown 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 Brown County Data Package
This page shows a preview of what's included in the Brown 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 Brown County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.