District of Columbia mammals

Eastern Gray Squirrel in DC

Sciurus carolinensis

Native to District of Columbia S5 Secure in District of Columbia

Not listed as nonindigenous in District of Columbia by USGS NAS; native to its District of Columbia 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.

Eastern Gray Squirrel in District of Columbia, by the numbers

Common in District of Columbia 1st most recorded of 51 mammals logged in District of Columbia

4,449 occurrence records
4,370 with iNaturalist photos
Jul 12, 2026 Last seen in District of Columbia

Records from 2000–2026.

4,449 total records count every District of Columbia occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 4,377 records with a full observation date.

When to look for the Eastern Gray Squirrel in District of Columbia

Most sightings fall in September to November.

4,377 District of Columbia occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly District of Columbia records (table)
MonthRecords
January265
February221
March369
April458
May440
June363
July272
August264
September481
October566
November361
December317

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

Seasonality

Year-round in District of Columbia, with recorded sightings peaking in September–November, with a smaller rise in March–June.

Occurrence map

Where Eastern Gray Squirrel has been recorded in District of Columbia

300 records mapped · zoom and drag to explore

289 District of Columbia records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
National Capital Parks 594
Rock Creek Park 84
Washington Monument 45
Chesapeake and Ohio Canal National Historical Park 3
the Anacostia River 2

Protected places with the most eastern gray squirrel 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 District of Columbia

CountyRecords
District of Columbia County 4,186
Other localities 263

The complete county distribution, spread across 1 District of Columbia counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Eastern gray squirrels rack up more DC records than any other mammal covered on this atlas, with reports densest around the National Mall’s shade trees, Rock Creek Park’s oak-hickory woods, and the wetland tree cover at Kenilworth Park and Aquatic Gardens.

They spend daylight hours burying acorns and other nuts one at a time across dozens of scattered caches, a habit that makes the species one of the more important tree planters in eastern forests since so many buried nuts are never dug back up. Around the Mall and downtown squares, that same caching instinct sends them digging in planters and flower beds instead of leaf litter.

DC reports appear in every month of the year, consistent with a species active through all seasons rather than one with a narrow window. The Mall’s heavy foot traffic naturally generates more photographed sightings than quieter corners of the city, so the record count reflects observer density as much as squirrel numbers.

Occurrence data from iNaturalist and GBIF.

Eastern Gray Squirrel in other states

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More mammals in District of Columbia in the atlas

Data & sources

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