CWD & EHD by county
Montana disease risk map.
Montana confirmed its first wild CWD detection in 2017. MT FWP has implemented a Priority Surveillance Area in affected hunt districts. Verify current sampling requirements per hunt district before season.
Confirm CWD management zones, sampling requirements, and carcass transport rules with Montana Fish, Wildlife and Parks and USDA APHIS before hunting.
CWD detection timeline
CWD detection timeline
2015 – 2026
Montana county detections
Where it's been found.
Counties below have CWD detection records on file. Click for the county-level page.
Carcass transport rules
If hunting in a CWD-positive area, follow your state agency's carcass transport rules — most agencies prohibit moving whole carcasses with brain or spinal tissue across designated zone boundaries. Verify the current rules with your state wildlife agency before transporting any harvest.
CWD testing
Most state wildlife agencies offer free or low-cost CWD testing of harvested deer at check stations or sample-drop locations during season. Contact the state agency for current testing locations and turnaround times.
EHD activity in Montana
Montana sees occasional EHD outbreak history. EHD is not transmissible to humans, and meat from clinically healthy deer is safe to consume. Watch for the disease-specific signs reported by hunters and biologists in late summer.
Hunter FAQ
Common questions, Montana.
Is CWD present in Montana?+
Yes. Montana has confirmed CWD detections since 2017. Verify current management-zone boundaries with Montana Fish, Wildlife and Parks.
What are the Montana carcass transport rules?+
If hunting in a CWD-positive area, follow your state agency's carcass transport rules — most agencies prohibit moving whole carcasses with brain or spinal tissue across designated zone boundaries. Verify the current rules with your state wildlife agency before transporting any harvest.
How do I get CWD testing in Montana?+
Most state wildlife agencies offer free or low-cost CWD testing of harvested deer at check stations or sample-drop locations during season. Contact the state agency for current testing locations and turnaround times.
How active is EHD in Montana?+
Occasional EHD outbreak history. EHD is not transmissible to humans and meat from clinically healthy deer remains safe to consume.
Is venison from CWD or EHD-affected deer safe to eat?+
EHD is not transmissible to humans. For CWD, the CDC and major health agencies recommend that hunters test deer harvested from CWD-positive zones and not consume meat from animals that test positive. No human cases of CWD have been documented.
Primary sources
- CWD sourceMontana Fish, Wildlife and Parks
- EHD sourceMontana Fish, Wildlife and Parks
- FederalUSDA APHIS — Chronic Wasting Disease
- Hunter resourceNational Deer Association
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