Where to Find Agate in Wisconsin

Wisconsin has 10 mapped collecting spots that report agate, spread across 10 counties. The largest share sits in Ashland County with 1 spot. 9 of the spots are on land mapped as publicly accessible.

Standout agate spots in Wisconsin

Hand-picked from the full list below, with the reason each one earns a trip.

Bayfield County
Bayfield County
The Lake Superior shoreline of Bayfield County, along the State Highway 13 corridor between Port Wing and Cornucopia, is a classic stretch of public agate beach.
Muscoda
Iowa County
The Wisconsin River gravel bars near Muscoda carry Lake Superior agates and quartz transported south by glacial outwash, giving the Driftless Area a rare source of free public collecting.

Best counties for agate in Wisconsin

Ranked by the number of mapped agate spots. County links open the full rockhounding page for that county.

Every agate spot we track in Wisconsin

Sorted by county. Coordinates open in Google Maps.

Spot	County	Minerals	Coordinates	Access
Ashland CountyFenton Road	Ashland County	Agate Jasper	46.2490, -90.6852	Public
Bayfield CountyD Street	Bayfield County	Agate Jasper	46.5684, -91.4203	Public
Black River & tributariesMerrilian to Marshfield	Clark County	Agate Jasper	44.5654, -90.6133	Public
Prairie du Chien	Crawford County	Agate	43.1153, -91.1579	Permission
Ounce CreekCoppermine Scenic Drive Loop	Douglas County	Agate Azurite Bornite Chlorite Copper Diopside Epidote Malachite +2 more	46.2192, -91.5640	Public
CassvilleBrewery Hollow Road	Grant County	Agate Quartz	42.7292, -90.9924	Public
MuscodaElm Street	Iowa County	Agate	43.1902, -90.4200	Public
Iron CountyIron Horse Trail	Iron County	Agate Jasper	46.4577, -90.2522	Public
Sawyer CountyRiver Road	Sawyer County	Agate Jasper	45.7601, -91.2054	Public
Central Wood CountyLincoln Road	Wood County	Agate Aventurine Quartzite	44.4322, -90.0296	Public

Before you go

Read the agate identification guide so you know what a keeper looks like in the field: Agate in the encyclopedia.

Agate in Wisconsin FAQ

Where can you find agate in Wisconsin?+

The mapped spots concentrate in Ashland County, Bayfield County, and Clark County. Every spot on this page appears on the map above with coordinates and access notes.

How many agate spots are mapped in Wisconsin?+

10 spots across 10 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.

Is it legal to collect agate in Wisconsin?+

Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 9 of the 10 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.

Where else to find agate

More minerals to hunt in Wisconsin

Hunt agate in Wisconsin with the map in your pocket

RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.