ZIP code 91789

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 1,724 acres · 341 state, 1,383 local 17%
  2. High 2,231 acres · Local Responsibility Area 22%
  3. Moderate 614 acres · Local Responsibility Area 6%
  4. Non-wildland 5,619 acres · Local Responsibility Area 55%

  10,187 acres of land in all, 341 in the State Responsibility Area and 9,846 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 21 fires that burned here

  Map
  1. 1972 Winnett Fire 747 acres in total 687 acres here
  2. 1929 Ryan 116 Fire 543 acres in total 390 acres here
  3. 1970 Fullerton Fire 3,381 acres in total 353 acres here
  4. 1970 Winnet Fire 305 acres here
  5. 1949 Citurs No. 174 Fire 517 acres in total 263 acres here
  6. 1981 Sun Mountain Ranch Fire 197 acres in total 193 acres here
  7. 1971 Gartel Fire 119 acres here
  8. 1979 Unnamed fire 118 acres in total 116 acres here
  9. 1928 Quinn 22 Fire 104 acres here
  10. 1972 Buzzard Peak Fire 183 acres in total 98 acres here

  And 11 smaller fires. The most recent was the 2022 Cut Off Fire, which burned 2 acres here. In all, 2,559 acres of ZIP code 91789 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