ZIP code 91784

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 1,495 acres · 619 state, 876 local 25%
  2. High 627 acres · Local Responsibility Area 11%
  3. Moderate 320 acres · Local Responsibility Area 5%
  4. Non-wildland 3,301 acres · Local Responsibility Area 55%
  5. Not mapped by CAL FIRE 224 acres · Mostly federal land 4%

  5,968 acres of land in all, 619 in the State Responsibility Area and 5,125 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 22 fires that burned here

  Map
  1. 1910 Unnamed fire 1,646 acres in total 992 acres here
  2. 2003 Grand Prix Fire 50,618 acres in total · Cause: Arson 974 acres here
  3. 1970 Unnamed fire 37,472 acres in total · Cause: Miscellaneous 629 acres here
  4. 2003 Padua Fire 10,458 acres in total · Cause: Arson 281 acres here
  5. 1935 San Antonio Canyon Fire 586 acres in total 258 acres here
  6. 1960 Armstrong Fire 807 acres in total 242 acres here
  7. 1945 Unnamed fire 418 acres in total 232 acres here
  8. 1911 Unnamed fire 349 acres in total 206 acres here
  9. 1961 Unnamed fire 201 acres here
  10. 1958 Dam Fire 147 acres here

  And 12 smaller fires. The most recent was the 2008 San Antonio Fire, which burned 54 acres here. In all, 2,497 acres of ZIP code 91784 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