Adams County, Illinois
Adams County is a county in Illinois. Its county FIPS code is 17001. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 17001
- Representative coordinates
- 39.986052, -91.194961
- County type
- County
- County seat or government
- Quincy
- Resident population, July 2025
- 64,267
- Land area
- 2,214.827 km²
- Water area
- 41.753 km²
- State
- Illinois
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Adams 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
62301 · 62305 · 62311 · 62312 · 62314 · 62316 · 62320 · 62324 · 62325 · 62338 · 62339 · 62343 · 62346 · 62347 · 62348 · 62349 · 62351 · 62359 · 62360 · 62365 · 62373 · 62376 · 62379
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.
- Adams CDP, IL
- Beverly CDP, IL
- Bloomfield CDP, IL
- Burton CDP, IL
- Camp Point village, IL
- Clayton village, IL
- Coatsburg village, IL
- Columbus village, IL
- Fall Creek CDP, IL
- Fowler CDP, IL
- Golden village, IL
- Kingston CDP, IL
- La Prairie village, IL
- Liberty village, IL
- Lima village, IL
- Loraine village, IL
- Marcelline CDP, IL
- Mendon village, IL
- Meyer CDP, IL
- Paloma CDP, IL
- Payson village, IL
- Plainville village, IL
- Quincy city, IL
- Richfield CDP, IL
- Ursa 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.