Idaho mammals

Eastern Gray Squirrel in Idaho

Sciurus carolinensis

Introduced to Idaho

NatureServe flags this species as exotic (non-native) in Idaho.

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.

Grey squirrel (Sciurus carolinensis) 01Squirrel closeup profile.gkEastern Grey SquirrelEastern Gray Squirrel, Barbican Centre, londonEastern Grey Squirrel in St James's Park, London - Nov 2006 edit
Photo: Charles J. Sharp · CC BY-SA 4.0Grey squirrel (Sciurus carolinensis) 01Photo: grendel|khan · CC BY-SA 3.0Squirrel closeup profile.gkPhoto: Tom Friedel · CC BY 3.0Eastern Grey SquirrelPhoto: لا روسا · CC BY-SA 4.0Eastern Gray Squirrel, Barbican Centre, londonPhoto: Diliff · CC BY-SA 3.0Eastern Grey Squirrel in St James's Park, London - Nov 2006 edit

Eastern Gray Squirrel in Idaho, by the numbers

Occasional in Idaho 64th most recorded of 123 mammals logged in Idaho

40 occurrence records
40 with iNaturalist photos
May 21, 2026 Last seen in Idaho

Records from 2000–2026.

When to look for the Eastern Gray Squirrel in Idaho

Most sightings fall in January.

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

Monthly Idaho records (table)
MonthRecords
January14
February1
March2
April5
May3
June1
July1
August3
September1
October4
November2
December3

Monthly eastern gray squirrel occurrence records (iNaturalist and GBIF) in Idaho, 2000–2026.

Seasonality

Year-round in Idaho, with recorded sightings peaking in January.

Occurrence map

Where Eastern Gray Squirrel has been recorded in Idaho

40 records mapped · zoom and drag to explore

40 Idaho records mapped

Where it's recorded in Idaho

CountyRecords
Kootenai County 18
Washington County 15
Payette County 4
Latah County 1
Bannock County 1
Boise County 1

The complete county distribution, spread across 6 Idaho counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Eastern gray squirrel is not native to Idaho; NatureServe flags the species as exotic, and its 40 recorded sightings cluster in the forested panhandle around the Idaho Panhandle and Nez Perce-Clearwater national forests, urban and park plantings far from this squirrel’s native eastern hardwood range.

January carries the largest share of reports, when bare branches and winter foraging make squirrels easier to spot against the canopy in town parks and yards. With iNaturalist and GBIF totals nearly matched, this is one of the more consistently photographed introduced mammals in this rank band.

Occurrence data from iNaturalist and GBIF.

Eastern Gray Squirrel in other states

View all states →

Grey squirrel (Sciurus carolinensis) 01
Full species profile Eastern Gray Squirrel Sciurus carolinensis Size 23–30 cm9.1–11.8 in Weight 400–710 g0.9–1.6 lb Lifespan 8 yr View the full profile

More mammals in Idaho 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
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries