Florida mammals

Oldfield Mouse in Florida

Peromyscus polionotus

Native to Florida S5 Secure in Florida

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

Oldfield Mouse in Florida, by the numbers

Common in Florida 25th most recorded of 116 mammals logged in Florida

548 occurrence records
23 with iNaturalist photos
Mar 8, 2026 Last seen in Florida

Records from 2000–2026.

548 total records count every Florida occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 534 records with a full observation date.

When to look for the Oldfield Mouse in Florida

Most sightings fall in January.

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

Monthly Florida records (table)
MonthRecords
January220
February28
March21
April5
May50
June41
July53
August6
September1
October0
November94
December15

Monthly oldfield mouse occurrence records (iNaturalist and GBIF) in Florida, 2000–2026.

Seasonality

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

Occurrence map

Where Oldfield Mouse has been recorded in Florida

300 records mapped · zoom and drag to explore

300 Florida records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Gulf Islands National Seashore 132
Ordway-Swisher Biological Station 16
Three Lakes Wildlife Management Area 1
Lake Wales Ridge State Forest 1
Topsail Hill Preserve State Park 1
Anastasia State Park 1

Protected places with the most oldfield 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 Florida

CountyRecords
Walton County 238
Okaloosa County 128
Marion County 40
Highlands County 38
Jackson County 21
Putnam County 16
Levy County 12
Leon County 10
Escambia County 8
Orange County 5
Polk County 3
Santa Rosa County 3
6 other counties 26

The complete county distribution, spread across 18 Florida counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Subspecies in Florida

Several pale beach mouse subspecies occur only on particular stretches of Florida’s coastal dunes and are federally protected.

Florida’s 548 oldfield mouse records come almost entirely from GBIF, with just 23 from iNaturalist, so this is large-scale survey data rather than casual sightings. Several pale beach mouse subspecies exist only on specific stretches of Florida’s coastal dunes and carry federal protection, though the records here cover the species as a whole.

January is the clear peak month, with 220 records, more than double November’s 94, the next-highest. Walton County holds 238 of the 548 records and Okaloosa 128, and Gulf Islands National Seashore leads the named sites with 132, so the record leans heavily on the western Panhandle.

Occurrence data from iNaturalist and GBIF.

More mammals in Florida in the atlas

Data & sources

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