Ventura County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 429,699 acres · 340,960 state, 88,739 local 36%
  2. High 29,799 acres · 12,253 state, 17,546 local 3%
  3. Moderate 14,248 acres · 1,895 state, 12,353 local 1%
  4. Non-wildland 104,715 acres · Local Responsibility Area 9%
  5. Not mapped by CAL FIRE 609,020 acres · Mostly federal land 51%

  1,187,481 acres of land in all, 355,108 in the State Responsibility Area and 223,353 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 582 fires that burned here

  Map
  1. 2017 Thomas Fire 281,791 acres in total · Cause: Miscellaneous 234,501 acres here
  2. 1932 Matilija Fire 219,999 acres in total · Cause: Miscellaneous 189,970 acres here
  3. 2006 Day Fire 161,816 acres in total · Cause: Debris burning 149,001 acres here
  4. 1985 Wheeler #2 Fire 122,687 acres in total · Cause: Miscellaneous 101,069 acres here
  5. 2003 Simi Fire 107,570 acres in total 85,125 acres here
  6. 1970 Clampitt Fire 115,537 acres in total · Cause: Power lines 73,466 acres here
  7. 2003 Piru Fire Cause: Equipment use 63,716 acres here
  8. 1985 Ferndale Fire Cause: Arson 46,800 acres here
  9. 1917 Unnamed fire Cause: Miscellaneous 43,892 acres here
  10. 1993 Green Meadows Fire 38,479 acres in total 36,117 acres here

  And 572 smaller fires. The most recent was the 2025 Janss Fire, which burned 2 acres here. In all, 763,762 acres of Ventura 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