Union County GIS Maps

Union 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.

Union County Population

Union County had 17,244 residents in 2020. That was 3.2% lower than in 2010. Union County had 1,049 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 42 people per square mile. Some of the county's most populated postal areas include Anna, Cobden and Jonesboro.

Population Trend in Union County IL

Union County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Union County Zip Codes

Union County has 7 zip codes. Some of the county's most populated zip codes include Anna (62906), Cobden (62920) and Jonesboro (62952). Anna is the largest zip by population, with about 7,464 residents or 43% of the county total. Together, the three largest zips account for about 79% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Union County IL

Union County Zip Code populations and trends per most recent census data.

Union County Demographics

Union County has a median age of 44.3, which makes the county a little older than Illinois overall. About 21.5% of residents are under 18, while 22.1% 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 29.1% of the population, which points to a solid working-age base. About 20.9% 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 Union County IL

Union County School Districts

Union County is served by 4 public school districts with 1,575 students enrolled in 2024. The largest districts on the county map are Goreville Community Unit 1, Cobden School Unit District 17 and Shawnee Community Unit 84. Those three districts account for about 86% 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 Union County IL

Union County school district enrollment and trends per most recent NCES reporting data.

Union County Housing & Real Estate

Union County has a median home value of $131,700 and a median gross rent of $658. About 77% 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 $245,250 and homes spent about 113 days on the market.

Businesses in Union County, IL

Union County has 794 business listings across 292 categories. The largest categories in Union County business listings are Churches & Religious Organizations (48, 6.0%), Cabin (23, 2.9%), and Farm (17, 2.1%). The full Union County business listings dataset includes names, categories, addresses and contact details where available. Union County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Union County, IL

Union County Business Listings

Union County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Union County Basemaps

Union 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.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from Illinois — explore the full structure before you buy.