Grundy County, Illinois
Grundy County is a county in Illinois. Its county FIPS code is 17063. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 17063
- Representative coordinates
- 41.292410, -88.401054
- County type
- County
- County seat or government
- Morris
- Resident population, July 2025
- 54,052
- Land area
- 1,082.96 km²
- Water area
- 32.112 km²
- State
- Illinois
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Grundy 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
60407 · 60410 · 60416 · 60420 · 60424 · 60437 · 60444 · 60447 · 60450 · 60470 · 60474 · 60479 · 60481 · 60541 · 60961 · 61360
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.
- Braceville village, IL
- Braidwood city, IL
- Carbon Hill village, IL
- Channahon village, IL
- Coal City village, IL
- Diamond village, IL
- Dwight village, IL
- East Brooklyn village, IL
- Gardner village, IL
- Godley village, IL
- Kinsman village, IL
- Mazon village, IL
- Minooka village, IL
- Morris city, IL
- Seneca village, IL
- South Wilmington village, IL
- Verona village, 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.