Logan County, Illinois
Logan County is a county in Illinois. Its county FIPS code is 17107. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 17107
- Representative coordinates
- 40.129277, -89.365309
- County type
- County
- County seat or government
- Lincoln
- Resident population, July 2025
- 27,182
- Land area
- 1,600.748 km²
- Water area
- 2.262 km²
- State
- Illinois
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Logan 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
61721 · 61723 · 61749 · 61751 · 61754 · 62512 · 62518 · 62519 · 62541 · 62543 · 62548 · 62613 · 62634 · 62635 · 62643 · 62656 · 62666 · 62671 · 62682 · 62693
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Logan 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.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
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