Placer County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 239,170 acres · 234,978 state, 4,192 local 25%
  2. High 88,320 acres · 78,974 state, 9,345 local 9%
  3. Moderate 82,317 acres · 43,575 state, 38,742 local 9%
  4. Non-wildland 143,915 acres · Local Responsibility Area 15%
  5. Not mapped by CAL FIRE 407,651 acres · Mostly federal land 42%

  961,372 acres of land in all, 357,527 in the State Responsibility Area and 196,194 in the Local. State zones are the ones the State Fire Marshal designated, in effect since April 1, 2024. Local zones are CAL FIRE's 2025 recommendation, which each city or county adopts by ordinance and can make stricter. How to read fire zones

• Fire history

  The 10 largest of 323 fires that burned here

  Map
  1. 2022 Mosquito Fire 76,771 acres in total · Cause: Miscellaneous 63,375 acres here
  2. 1960 Volcano Fire Cause: Smoking 42,582 acres here
  3. 2014 King Fire 97,685 acres in total · Cause: Arson 29,289 acres here
  4. 1924 Deadwood Fire 27,879 acres here
  5. 2013 American Fire Cause: Miscellaneous 27,430 acres here
  6. 1936 Mckenzie Mill Fire 21,288 acres here
  7. 2001 Star Fire Cause: Miscellaneous 16,459 acres here
  8. 2008 Westville Fire Cause: Lightning 11,085 acres here
  9. 2008 Government Fire Cause: Lightning 9,218 acres here
  10. 2006 Ralston Fire Cause: Miscellaneous 8,418 acres here

  And 313 smaller fires. The most recent was the 2025 Ranch Fire, which burned 125 acres here. In all, 262,187 acres of Placer County have burned. Acres are the land each fire burned here, and fires that crossed less than an acre are not counted. Some older or smaller fires may be missing, and a fire perimeter can include unburned patches. How to read fire history