Orange County

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 166,951 acres · 101,983 state, 64,968 local 33%
  2. High 24,262 acres · 3,198 state, 21,065 local 5%
  3. Moderate 11,026 acres · 982 state, 10,044 local 2%
  4. Non-wildland 245,314 acres · Local Responsibility Area 48%
  5. Not mapped by CAL FIRE 63,434 acres · Mostly federal land 12%

  510,987 acres of land in all, 106,162 in the State Responsibility Area and 341,391 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 199 fires that burned here

  Map
  1. 1948 Green River Fire 53,080 acres in total 52,461 acres here
  2. 1967 Paseo Grande Fire 51,077 acres in total 45,910 acres here
  3. 1958 Steward Fire 68,106 acres in total 39,383 acres here
  4. 2007 Santiago Fire Cause: Miscellaneous 28,426 acres here
  5. 1980 Indian Fire 28,940 acres in total · Cause: Miscellaneous 25,078 acres here
  6. 2024 Airport Fire 23,526 acres in total · Cause: Equipment use 21,281 acres here
  7. 1982 Gypsum Fire Cause: Miscellaneous 20,142 acres here
  8. 1914 Unnamed fire 18,754 acres here
  9. 1993 Ortega Fire 21,012 acres in total · Cause: Miscellaneous 16,115 acres here
  10. 2008 Freeway Fire 30,305 acres in total · Cause: Vehicle 15,547 acres here

  And 189 smaller fires. The most recent was the 2025 Club Fire, which burned 4 acres here. In all, 193,971 acres of Orange 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