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Where am ILOCATED

Clay County, Illinois

Clay County, Illinois, has 12,793 residents (July 2025 estimate). Its county seat is Louisville. It uses Central Time and covers 468 sq mi (1,213 km²) of land.

ChicagoAurora
Clay County in Illinois
FloraLouisvilleClay CityXeniaIola
Clay County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
12,793
Land area
468 sq mi (1,213 km²)
County seat or government
Louisville
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$60,417 ± $11,361
Median home value
$97,400 ± $10,728
Median rent, with utilities
$735 ± $41
Homes lived in by their owners
79.3% ± 3.8 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Effingham, IL micro area and Centralia, IL micro area
Water area
1.18 sq mi (3.06 km²)
State
Illinois
County code (FIPS)
17025
Coordinates (central point)
38.746819, -88.482325
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 Clay 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. 628396,183 people
  2. 624485,356 people
  3. 628583,554 people
  4. 624242,500 people
  5. 628992,022 people
  6. 628541,827 people
  7. 624431,609 people
  8. 628241,485 people
  9. 628681,463 people
  10. 628381,341 people
  11. 62426778 people
  12. 62434191 people
All 13
  1. 6287928 people

13 ZIP Code areas overlap Clay 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

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Clay County, largest first

  1. Harter Township6,035 people
  2. Louisville Township1,917 people
  3. Clay City Township1,050 people
  4. Xenia Township718 people
  5. Blair Township714 people
  6. Oskaloosa Township573 people
  7. Larkinsburg Township501 people
  8. Stanford Township491 people
  9. Hoosier Township488 people
  10. Pixley Township303 people
  11. Bible Grove Township131 people
  12. Songer Township131 people

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

School districts in Clay County, largest first

  1. Effingham Community Unit School District 4020,184 people
  2. Richland County Community Unit School District 115,590 people
  3. Jasper County Community Unit School District 18,928 people
  4. Flora Community Unit School District 357,569 people
  5. North Clay Community Unit School District 254,385 people
  6. South Central Community Unit School District 4014,031 people
  7. Dieterich Community Unit School District 302,715 people
  8. North Wayne Community Unit School District 2002,683 people
  9. Clay City Community Unit District 101,937 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. Flora, Illinois (city)4,475 people
  2. Louisville, Illinois (village)1,163 people
  3. Clay City, Illinois (village)723 people
  4. Xenia, Illinois (village)389 people
  5. Iola, Illinois (village)90 people
  6. Sailor Springs, Illinois (village)60 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Richland County, Illinois22 mi east
  2. Effingham County, Illinois22 mi north
  3. Wayne County, Illinois22 mi south
  4. Marion County, Illinois25 mi west
  5. Jasper County, Illinois25 mi northeast
  6. Fayette County, Illinois34 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.