Wisconsin mammals

American Mink in Wisconsin

Neogale vison

Native to Wisconsin S5 Secure in Wisconsin

Not listed as nonindigenous in Wisconsin by USGS NAS; native to its Wisconsin range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

American Mink in Wisconsin, by the numbers

Common in Wisconsin 20th most recorded of 75 mammals logged in Wisconsin

1,462 occurrence records
468 with iNaturalist photos
Jul 3, 2026 Last seen in Wisconsin

Records from 2000–2026.

1,462 total records count every Wisconsin occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,455 records with a full observation date.

When to look for the American Mink in Wisconsin

Most sightings fall in November.

1,455 Wisconsin occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Wisconsin records (table)
MonthRecords
January18
February18
March55
April41
May35
June102
July87
August75
September45
October28
November930
December21

Monthly american mink occurrence records (iNaturalist and GBIF) in Wisconsin, 2000–2026.

Seasonality

Year-round in Wisconsin, with recorded sightings peaking in November.

Occurrence map

Where American Mink has been recorded in Wisconsin

300 records mapped · zoom and drag to explore

300 Wisconsin records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Door County 4
Richard Bong Recreation Area 3
Lake Michigan shoreline 2
Willow River State Park 2
Newport State Park 2
Lake Mills Wildlife Area 2
Havenwoods Forest Preserve And Nature Center 2
Tiffany Wildlife Area 2

Protected places with the most american mink sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Wisconsin

CountyRecords
Kenosha County 988
Dane County 89
Milwaukee County 33
Waukesha County 29
Portage County 27
Door County 22
Winnebago County 16
Outagamie County 16
Dodge County 13
Ozaukee County 12
Racine County 11
Jefferson County 10
43 other counties 196

The complete county distribution, spread across 55 Wisconsin counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Wisconsin’s occurrence databases hold 1,416 mink records, one of the higher tallies among mapped mammals in the state, gathered from riverbanks, marsh edges, and lakeshores across nearly every region.

Riding the marsh at Horicon

Horicon National Wildlife Refuge, one of the largest freshwater marshes in the country, sits in the glaciated farm country of southeastern Wisconsin. Its dense cattail stands and muskrat colonies give mink both prey and ready-made dens: minks here take over abandoned muskrat burrows and hunt muskrats themselves, along with frogs and marsh birds, working the water’s edge in the same bounding, arch-backed lope they use on any Wisconsin shoreline.

From kettle lakes to Northwoods streams

Kettle Moraine State Forest’s tangle of glacially carved kettle lakes gives mink the same shoreline structure they need everywhere: root tangles, brush piles, and hollow logs to den in near water. Farther north, the lakes and rivers threading the Chequamegon-Nicolet National Forest offer the same setup on a wilder scale, with mink hunting fish and crayfish through open water and switching to voles, rabbits, and birds once ice slows the fishing.

Status in Wisconsin

NatureServe ranks the mink S5, secure, in Wisconsin, and it’s native to the state. Its records follow water nearly everywhere in the state, from the largest marsh to the smallest kettle lake, wherever a shoreline still has enough cover to hide a den.

Occurrence data from iNaturalist.

More mammals in Wisconsin in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"