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Where am ILOCATED

Union County, Illinois

Union County, Illinois, has 16,656 residents (July 2025 estimate). Its county seat is Jonesboro. It uses Central Time and covers 413 sq mi (1,071 km²) of land.

ChicagoAurora
Union County in Illinois
AnnaJonesboroCobdenDongolaAlto Pass
Union County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
16,656
Land area
413 sq mi (1,071 km²)
County seat or government
Jonesboro
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$55,728 ± $5,408
Median home value
$131,700 ± $11,589
Median rent, with utilities
$648 ± $52
Homes lived in by their owners
77.4% ± 2.5 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Carbondale, IL micro area, Cape Girardeau, MO-IL metro area, and Marion-Herrin, IL micro area
Water area
8.7 sq mi (22.5 km²)
State
Illinois
County code (FIPS)
17181
Coordinates (central point)
37.485652, -89.244639
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Union County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 629067,329 people
  2. 629024,135 people
  3. 629202,959 people
  4. 629392,958 people
  5. 629522,852 people
  6. 629582,103 people
  7. 629261,998 people
  8. 629121,515 people
  9. 62905779 people
  10. 62957640 people
  11. 62923441 people
  12. 62998218 people
All 13
  1. 6296137 people

13 ZIP Code areas overlap Union County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Union County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Precincts in Union County, largest first

  1. Lick Creek Precinct1,454 people
  2. Jonesboro District 2 Precinct1,238 people
  3. Anna District 4 Precinct1,179 people
  4. Jonesboro District 1 Precinct1,172 people
  5. Alto Pass Precinct1,123 people
  6. Anna District 6 Precinct1,093 people
  7. Anna District 3 Precinct1,082 people
  8. Stokes Precinct1,077 people
  9. Cobden District 1 Precinct1,045 people
  10. Cobden District 2 Precinct1,023 people
  11. Anna District 1 Precinct950 people
  12. Dongola District 1 Precinct796 people
All 20
  1. Anna District 7 Precinct613 people
  2. Jonesboro District 3 Precinct604 people
  3. Anna District 5 Precinct568 people
  4. Dongola District 2 Precinct543 people
  5. Union Precinct462 people
  6. Anna District 2 Precinct451 people
  7. Balcom Precinct291 people
  8. Mill Creek Precinct233 people

People counts are American Community Survey 2020–2024 5-year estimates. All precincts in Illinois, by county

School districts in Union County, largest first

  1. Anna Jonesboro Community High School District 8111,404 people
  2. Vienna High School District 1339,821 people
  3. Anna Community Consolidated School District 376,854 people
  4. Goreville Community Unit School District 13,717 people
  5. Cobden School Unit District 173,268 people
  6. Jonesboro Community Consolidated School District 433,048 people
  7. Dongola School Unit District 661,822 people
  8. Shawnee Community Unit School District 841,745 people
  9. Lick Creek Community Consolidated School District 161,502 people
  10. Cypress School District 641,256 people
  11. Buncombe Consolidated School District 43947 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Anna, Illinois (city)4,196 people
  2. Jonesboro, Illinois (city)1,870 people
  3. Cobden, Illinois (village)1,170 people
  4. Dongola, Illinois (village)553 people
  5. Alto Pass, Illinois (village)343 people
  6. Mill Creek, Illinois (village)37 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Pulaski County, Illinois20 mi south
  2. Johnson County, Illinois20 mi east
  3. Alexander County, Illinois22 mi south
  4. Jackson County, Illinois22 mi north
  5. Williamson County, Illinois24 mi northeast
  6. Cape Girardeau County, Missouri25 mi west
  7. Perry County, Missouri34 mi northwest

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.