Clinton County, Illinois
Clinton County is a county in Illinois. Its county FIPS code is 17027. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 17027
- Representative coordinates
- 38.606295, -89.426228
- County type
- County
- County seat or government
- Carlyle
- Resident population, July 2025
- 37,128
- Land area
- 1,227.502 km²
- Water area
- 75.634 km²
- State
- Illinois
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Clinton County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
62215 · 62216 · 62218 · 62219 · 62230 · 62231 · 62245 · 62249 · 62250 · 62253 · 62265 · 62266 · 62275 · 62293 · 62801 · 62875 · 62882
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Albers village, IL
- Aviston village, IL
- Bartelso village, IL
- Beckemeyer village, IL
- Breese city, IL
- Carlyle city, IL
- Centralia city, IL
- Damiansville village, IL
- Germantown village, IL
- Hoffman village, IL
- Huey village, IL
- Keyesport village, IL
- New Baden village, IL
- St. Rose village, IL
- Trenton city, IL
- Wamac city, IL
Areas sharing the mapped boundary
These areas touch this mapped boundary.
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 at your current point, check its ZIP area, or find its physical time zone.