ZIP code 91103

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 1,084 acres · Local Responsibility Area 37%
  2. High 135 acres · Local Responsibility Area 5%
  3. Moderate 171 acres · Local Responsibility Area 6%
  4. Non-wildland 1,561 acres · Local Responsibility Area 53%

  2,951 acres of land in all, 2,951 of it in the Local Responsibility Area. 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

  Fires CAL FIRE has recorded here

  Map
  1. 1878 Unnamed fire 59,469 acres in total 82 acres here
  2. 1929 Ford No. 125 Fire 197 acres in total 74 acres here
  3. 1986 Flintridge Fire 85 acres in total 65 acres here
  4. 1959 Unnamed fire 67 acres in total 52 acres here
  5. 1991 Unnamed fire 27 acres in total 25 acres here
  6. 1990 Unnamed fire 15 acres here
  7. 2025 Eaton Fire 14,056 acres in total 4 acres here
  8. 1949 Katherine Fire 142 acres in total 4 acres here

  The most recent was the 2025 Eaton Fire, which burned 4 acres here. In all, 197 acres of ZIP code 91103 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