Where to Find Agate in Illinois
5 mapped agate rockhounding spots in Illinois, across 4 counties. Agate is one of the most popular rockhounding targets in the United States.
Map of 5 agate rockhounding spots in Illinois
Agate by county in Illinois
Counties ranked by number of agate spots in our database.
Every agate spot in Illinois
Sorted by county. Coordinates open in Google Maps. Click a row for details.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| FayvilleThebes Road | Alexander County | 37.1986, -89.4522 | Public | |
| ThebesOld Route 3 | Alexander County | 37.2393, -89.4422 | Public | |
| HamiltonSouth 9th Street | Hancock County | 40.3872, -91.3462 | Public | |
| Bishop HillCemetary Street | Henry County | 41.2051, -90.1152 | Public | |
| CordovaRiver Road North | Rock Island County | 41.7160, -90.3112 | Public |
Agate in Illinois FAQ
Where can I find agate in Illinois?+
RockHoundR tracks 5 agate spots in Illinois, spread across 4 counties. The strongest concentration is in Alexander County.
Is collecting agate legal in Illinois?+
Casual hand collection of common rocks and minerals like agate is allowed on most BLM and U.S. Forest Service land in Illinois, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.
What is the best agate location in Illinois?+
Alexander County has the most agate spots in our database for Illinois. The full county breakdown is below — different counties produce different qualities and varieties.
Other states for agate
Hunt agate in Illinois on the map
Open RockHoundR for live land overlays, weather, geology, and saved spots.
