New Hampshire mammals

American Mink in New Hampshire

Neogale vison

Native to New Hampshire S5 Secure in New Hampshire

Not listed as nonindigenous in New Hampshire by USGS NAS; native to its New Hampshire 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 New Hampshire, by the numbers

Occasional in New Hampshire 28th most recorded of 76 mammals logged in New Hampshire

142 occurrence records
130 with iNaturalist photos
Jun 21, 2026 Last seen in New Hampshire

Records from 2000–2026.

142 total records count every New Hampshire occurrence from GBIF and iNaturalist; the monthly chart covers the 135 records with a full observation date.

When to look for the American Mink in New Hampshire

Most sightings fall in June to August.

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

Monthly New Hampshire records (table)
MonthRecords
January9
February10
March19
April4
May10
June18
July17
August20
September5
October6
November8
December9

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

Seasonality

Year-round in New Hampshire, with recorded sightings peaking in June–August, with a smaller rise in March.

Occurrence map

Where American Mink has been recorded in New Hampshire

142 records mapped · zoom and drag to explore

140 New Hampshire records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Appalachian National Scenic Trail 2
White Mountain National Forest 2
UNew Hampshire - Horticulture Farm 1
Sunapee State Park 1
Grafton Pond 1
White Mountain Purchase Unit 1
Hirst Wildlife Management Area 1
Hampton Beach State Park 1

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 New Hampshire

CountyRecords
Hillsborough County 31
Grafton County 29
Cheshire County 15
Carroll County 14
Merrimack County 12
Belknap County 11
Rockingham County 10
Coos County 10
Strafford County 5
Sullivan County 1
Other localities 4

The complete county distribution, spread across 10 New Hampshire counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

New Hampshire’s 118 mink records all come from iNaturalist, with the most recent sighting from June 2026.

Salt marsh to lake shore, always near water

A mink almost never strays far from the water’s edge, denning in muskrat burrows, root tangles, and hollow logs anywhere from a riverbank to a stretch of coastal tide pools. New Hampshire’s short Seacoast and the tidal marshes around Great Bay match that description closely, and the state’s Lakes Region adds hundreds of miles of pond and lake shoreline that offer the same kind of denning cover. The White Mountains contribute the mountain streams a mink patrols on its way between larger bodies of water.

Two peaks a year, not one

Records rise sharply in March and again in July, roughly the frontier between the mating season in late winter and the point in summer when young mink start ranging on their own along the shoreline. Outside those windows sightings drop off, though a mink hunting fish, crayfish, and frogs at the water’s edge stays active through every season.

Status in New Hampshire

The mink is native to New Hampshire, and NatureServe ranks it S5, secure. Its need for continuous, undeveloped shoreline ties it closely to the state’s rivers, lakes, and the tidal marshes of the Seacoast.

Occurrence data from iNaturalist.

More mammals in New Hampshire 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"