Oregon mammals

Creeping Vole in Oregon

Microtus oregoni

Native to Oregon S5 Secure in Oregon

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

Microtus oregoniCreeping Vole (Microtus oregoni)Creeping Vole (Microtus oregoni)
Photo: Jacqui Simmons · CC BY-SA 4.0Microtus oregoniPhoto: Tristan Jobin · CC BY 4.0Creeping Vole (Microtus oregoni)Photo: Lee Cain · CC BY 4.0Creeping Vole (Microtus oregoni)

Creeping Vole in Oregon, by the numbers

Occasional in Oregon 67th most recorded of 178 mammals logged in Oregon

798 occurrence records
19 with iNaturalist photos
Jun 19, 2026 Last seen in Oregon

Records from 2000–2026.

798 total records count every Oregon occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 796 records with a full observation date.

When to look for the Creeping Vole in Oregon

Most sightings fall in August.

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

Monthly Oregon records (table)
MonthRecords
January34
February24
March17
April36
May83
June35
July78
August192
September112
October103
November70
December12

Monthly creeping vole occurrence records (iNaturalist and GBIF) in Oregon, 2000–2026.

Seasonality

Year-round in Oregon, with recorded sightings peaking in August.

Occurrence map

Where Creeping Vole has been recorded in Oregon

300 records mapped · zoom and drag to explore

300 Oregon records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Siuslaw National Forest 39
Three Sisters Wilderness 13
Oregon Islands National Wildlife Refuge Wilderness Area 2
Rock Creek Wilderness 2
Mt. Hood National Forest 1
Lewis and Clark National Historical Park 1
McDonald-Dunn Research Forest 1

Protected places with the most creeping vole 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 Oregon

CountyRecords
Tillamook County 156
Douglas County 143
Lane County 121
Benton County 70
Clatsop County 58
Lincoln County 57
Linn County 35
Washington County 31
Clackamas County 20
Multnomah County 19
Curry County 15
Columbia County 12
9 other counties 61

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

Creeping-vole records are concentrated in western Oregon’s damp lowlands and forest margins, including the Willamette Valley, river greenways, and coastal habitats. The series rises from May through August and shows a separate November pulse, while winter and early-spring records are thin. Most records come from GBIF rather than recent community sightings, so they document collection and reporting history, not vole abundance.

Occurrence data from iNaturalist and GBIF.

Microtus oregoni
Full species profile Creeping Vole Microtus oregoni Size 10.6 cm4.2 in Weight 19 g0.7 oz Lifespan Up to 1.3 yr View the full profile

More mammals in Oregon 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"