Grant Park: Fossil Hunting in Milwaukee County, Wisconsin

Updated August 2026

Grant Park is a mapped rockhounding spot in Milwaukee County, Wisconsin. Reported finds include fossilized coral, beach glass, sodalite, unakite, cold water agate. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Milwaukee County
State: Wisconsin
Nearest road: Grant Park Drive
Postcode: 53172
Coordinates: 42.91924, -87.84666

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Grant Park

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Grant Park.

Across the state line from Grant Park

Grant Park is close enough to the Wisconsin border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Glencoe BeachCook County, Illinois · 56 mi awayGranite, Coral, Brachiopod

Grant Park FAQ

Where is Grant Park?+

Grant Park is in Milwaukee County, Wisconsin, at 42.91924, -87.84666. Nearest road: Grant Park Drive.

What rocks and minerals can you find at Grant Park?+

Grant Park is reported to produce Fossilized Coral, Beach Glass, Sodalite, Unakite, Cold Water Agate.

Is collecting allowed at Grant Park?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Grant Park?+

A rock hammer, a cold chisel, safety glasses, and newspaper or foam for wrapping finds cover most fossil ground. A trowel and a sieve help in soft exposures.

How do I get to Grant Park?+

Open the directions link to navigate to 42.91924, -87.84666 in Google Maps. The nearest road is Grant Park Drive.

More rockhounding in Wisconsin

See all 92 Wisconsin spots →

Open Grant Park on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.