Lee County, Illinois
Lee County is a county in Illinois. Its county FIPS code is 17103. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 17103
- Representative coordinates
- 41.747447, -89.299362
- County type
- County
- County seat or government
- Dixon
- Resident population, July 2025
- 32,914
- Land area
- 1,877.142 km²
- Water area
- 9.78 km²
- State
- Illinois
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Lee 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
60518 · 60530 · 60553 · 61006 · 61021 · 61031 · 61042 · 61057 · 61064 · 61068 · 61071 · 61081 · 61243 · 61310 · 61318 · 61324 · 61330 · 61331 · 61342 · 61349 · 61353 · 61367 · 61376 · 61378
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Lee 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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Find the county at your current point, check its ZIP area, or find its physical time zone.