California mammals

Wild Boar in California

Sus scrofa

Introduced to California

California's Sus scrofa records are of an introduced species; it does not occur here as a wild native population.

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.

Wild Boar in California, by the numbers

Common in California 40th most recorded of 241 mammals logged in California

2,117 occurrence records
1,998 with iNaturalist photos

Records from 2000–2026.

2,117 total records count every California occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 2,106 records with a full observation date.

When to look for the Wild Boar in California

Most sightings fall in March to June.

2,106 California occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly California records (table)
MonthRecords
January201
February139
March193
April247
May185
June170
July118
August133
September148
October216
November178
December178

Monthly wild boar occurrence records (iNaturalist and GBIF) in California, 2000–2026.

Seasonality

Year-round in California, with recorded sightings peaking in March–June, with a smaller rise in October–January.

Occurrence map

Where Wild Boar has been recorded in California

300 records mapped · zoom and drag to explore

300 California records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Henry W. Coe State Park 94
Mount Diablo State Park 64
Blue Oak Ranch Reserve 22
Hastings Natural History Reserve 16
Pinnacles National Park 13
Channel Islands National Park 12
Canada de los Osos Ecological Reserve 11
Ventana Wilderness 9

Protected places with the most wild boar 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 California

CountyRecords
Santa Clara County 898
Contra Costa County 169
Monterey County 134
San Benito County 118
San Luis Obispo County 97
Santa Barbara County 86
Alameda County 73
Sonoma County 67
Mendocino County 52
Tehama County 45
Stanislaus County 35
Riverside County 34
37 other counties 309

The complete county distribution, spread across 49 California counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Wild boar reports spread through California’s oak woodland, brush, ranchland, and damp creek bottoms. Coastal counties and the foothills carry much of the pattern, while dense cities and the driest desert country contribute fewer observations.

Reports appear throughout the year, with a modest April high and another lift in October. Seasonal rain, fresh forage, hunting activity, and easier detection can all affect those bumps. California contributes a notable part of the mapped western record footprint, but submitted sightings don’t reveal the number of boar on the ground.

Occurrence data from iNaturalist and GBIF.

More mammals in California 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"