Milford: Diamond Rockhounding in Hamilton County, Ohio

Updated June 2026

Milford is a mapped rockhounding spot in Hamilton County, Ohio. Reported finds include diamond. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Hamilton County
State: Ohio
Nearest road: Glendale Milford Road
Postcode: 45111
Coordinates: 39.18495, -84.28853

Geology at Milford

This spot sits on Kope Formation, mapped as shale that formed roughly 470 to 445 million years ago. Sedimentary rock like this erodes unevenly, so the most productive collecting is typically along fresh cuts, badland slopes, and active drainages.

Mapped unit: Kope Formation
Age: 470–445 Ma (Middle Ordovician to Late Ordovician)
Rock types: shale
Elevation: 530 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Milford

Best months: March to November. Typical highs run 87°F in midsummer and 39°F in midwinter, with winter lows near 21°F.

Climate normals: NOAA 1991-2020 monthlies, MILFORD station (0 mi away).

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 Milford

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

Diamond Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Milford.

Across the state line from Milford

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

Milford FAQ

Where is Milford?+

Milford is in Hamilton County, Ohio, at 39.18495, -84.28853. Nearest road: Glendale Milford Road.

What rocks and minerals can you find at Milford?+

Milford is reported to produce Diamond.

Is collecting allowed at Milford?+

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 Milford?+

A rock hammer, sturdy gloves, safety glasses, and a collecting bag cover the basics here. Add a spray bottle: wet rock shows color and pattern that dry rock hides.

When is the best time to visit Milford?+

The most comfortable months at Milford are March to November.

How do I get to Milford?+

Open the directions link to navigate to 39.18495, -84.28853 in Google Maps. The nearest road is Glendale Milford Road.

More rockhounding in Ohio

See all 38 Ohio spots →

Open Milford on the map

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