ZIP code 91906

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 25,746 acres · 25,739 state, 7 local 38%
  2. High 3,851 acres · State Responsibility Area 6%
  3. Moderate 162 acres · State Responsibility Area <1%
  4. Not mapped by CAL FIRE 37,930 acres · Mostly federal land 56%

  67,689 acres of land in all, 29,752 in the State Responsibility Area and 7 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 98 fires that burned here

  Map
  1. 1944 Unnamed fire 9,790 acres in total · Cause: Miscellaneous 9,675 acres here
  2. 1940 Unnamed fire Cause: Miscellaneous 9,086 acres here
  3. 1968 Donovan Fire 8,737 acres here
  4. 1970 Laguna Fire 174,162 acres in total · Cause: Campfire 8,271 acres here
  5. 1973 Boulder Oaks Fire 8,051 acres in total · Cause: Miscellaneous 6,952 acres here
  6. 2016 Border 3 Fire 7,606 acres in total 4,335 acres here
  7. 1999 Shockey Fire 3,285 acres in total 2,338 acres here
  8. 1950 Boulder Creek Fire 2,996 acres in total 2,013 acres here
  9. 1947 Unnamed fire Cause: Miscellaneous 1,988 acres here
  10. 1944 Unnamed fire 64,420 acres in total · Cause: Miscellaneous 1,934 acres here

  And 88 smaller fires. The most recent was the 2025 Posta Fire, which burned 19 acres here. In all, 53,895 acres of ZIP code 91906 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