Maryland mammals

White-footed Mouse in Maryland

Peromyscus leucopus

Native to Maryland S5 Secure in Maryland

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

White-footed Mouse in Maryland, by the numbers

Common in Maryland 6th most recorded of 100 mammals logged in Maryland

2,941 occurrence records

Records from 2000–2026.

2,941 total records count every Maryland occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 2,909 records with a full observation date.

When to look for the White-footed Mouse in Maryland

Most sightings fall in July to August.

2,909 Maryland occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Maryland records (table)
MonthRecords
January50
February64
March32
April157
May462
June344
July627
August542
September207
October336
November39
December49

Monthly white-footed mouse occurrence records (iNaturalist and GBIF) in Maryland, 2000–2026.

Seasonality

Year-round in Maryland, with recorded sightings peaking in July–August, with a smaller rise in May.

Occurrence map

Where White-footed Mouse has been recorded in Maryland

300 records mapped · zoom and drag to explore

300 Maryland records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Chesapeake and Ohio Canal National Historical Park 22
Mckee Beshers Wildlife Management Area 4
Assateague Island National Seashore 3
Rocky Gap State Park 2
Patuxent River State Park 2
Franklin Point State Park 1
Wye Island Natural Resource Management Area 1
Soldiers Delight Natural Environment Area 1

Protected places with the most white-footed mouse 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 Maryland

CountyRecords
Anne Arundel County 2,386
Prince George's County 133
Frederick County 102
Montgomery County 81
Allegany County 44
Baltimore County 34
Howard County 32
Cecil County 29
Washington County 21
Dorchester County 19
Harford County 12
Garrett County 7
9 other counties 41

The complete county distribution, spread across 21 Maryland counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

White-footed Mice are widespread in Maryland’s deciduous woods, hedgerows, and brushy edges, but their nocturnal habits make casual sightings uncommon. Around Blackwater, Eastern Neck, and Assateague, signs are more likely beneath logs and in seed-rich woodland than on open trails; observation should never involve disturbing nests or cover.

Records occur year-round, with stronger signals from May through August and again in October. Those patterns combine animal activity with seasonal survey effort, so quiet months should not be read as absence.

More mammals in Maryland 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"