ZIP code 91321

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 11,307 acres · 4,277 state, 7,030 local 66%
  2. High 609 acres · Local Responsibility Area 4%
  3. Moderate 329 acres · Local Responsibility Area 2%
  4. Non-wildland 694 acres · Local Responsibility Area 4%
  5. Not mapped by CAL FIRE 4,130 acres · Mostly federal land 24%

  17,068 acres of land in all, 4,277 in the State Responsibility Area and 8,662 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 94 fires that burned here

  Map
  1. 1962 Newhall Fire 8,583 acres in total 6,705 acres here
  2. 2004 Foothill Fire 5,970 acres in total · Cause: Arson 4,568 acres here
  3. 2008 Sayre Fire 11,260 acres in total 4,511 acres here
  4. 1919 Ravenna Fire 70,796 acres in total 2,640 acres here
  5. 1916 Tunnel Fire 3,441 acres in total 2,635 acres here
  6. 2019 Saddle Ridge Fire 8,799 acres in total 2,377 acres here
  7. 1970 Clampitt Fire 115,537 acres in total · Cause: Power lines 2,049 acres here
  8. 2016 Sand Fire 41,383 acres in total · Cause: Equipment use 1,631 acres here
  9. 1957 Unnamed fire 878 acres here
  10. 1979 Placerita Fire 816 acres here

  And 84 smaller fires. The most recent was the 2025 Hurst Fire, which burned 551 acres here. In all, 14,576 acres of ZIP code 91321 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