Agates near Madison, WI
18 of the mapped rockhounding spots within 150 miles of Madison report agate. The closest is Devil's Lake, about 28 miles out (36 min drive).
Agates are banded chalcedony nodules that survive long after their volcanic host rock rots away, which is why they concentrate in gravel bars, beaches, and glacial deposits far from where they formed.
Map of 18 agate collecting spots within 150 miles of Madison, Wisconsin
Closest agates spots to Madison
- Devil's LakeSauk County, Wisconsin28 mi · 36 min driveLake Superior Agate
- MuscodaIowa County, Wisconsin52 mi · 1 hr 5 min driveAgate
- DubuqueDubuque County, Iowa73 mi · 1 hr 32 min driveLake Superior Agate, Moss Agate, Oolitic Agates
- BellevueJackson County, Iowa77 mi · 1 hr 37 min driveLake Superior Agate, Moss Agate, Carnelian
- CassvilleGrant County, Wisconsin84 mi · 1 hr 45 min driveAgate, Quartz
- Prairie du ChienCrawford County, Wisconsin89 mi · 1 hr 51 min driveAgate
Types of agates reported near Madison
Counts reflect how many spots in this radius mention each variety.
- Lake Superior Agate9
- Agate7
- Coldwater Agate2
- Moss Agate2
- Oolitic Agates1
Every agate spot within 150 miles of Madison
Sorted by distance from Madison. Tap a row for directions, access status, and nearby trips.
Agates near Madison FAQ
Where can I find agates near Madison?+
18 mapped spots within about 150 miles of Madison report agate. The closest is Devil's Lake in Sauk County County, roughly 28 miles away (36 min drive). The full list with coordinates is on this page.
Can I collect agates on public land near Madison?+
18 of the 18 spots here sit on land mapped as publicly accessible. Casual hand collecting of common rocks and minerals is allowed on most BLM and Forest Service land with limits set by the local field office; national parks and most state parks are closed to collecting. Confirm current rules with the managing agency before a trip.
What is the fastest way to spot an agate in a gravel bed?+
Look for waxy luster and translucence rather than color. Wet the stone or look right after rain: agate glows softly at thin edges when backlit, while jasper and chert stay opaque. Banding clinches it but is often hidden until the stone is cracked or tumbled.
How far from Madison do I need to drive?+
The nearest agate spot is about 28 miles out, and the farthest on this list is 150 miles. Most fall inside a normal weekend day-trip radius.
Keep exploring from Madison
Agates near other cities
Hunt agates around Madison with the map in your pocket
RockHoundR shows these spots on an offline map with public land overlays, geology layers, weather, and a log for your finds.
