ZIP code 91103

Los Angeles County, including Pasadena

Search for an address

Report created October 27, 2026 at www.firezones.info/zip/91103

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    37% Very High

    All of the Very High land is in the Local Responsibility Area, where each city or county adopts the zones CAL FIRE recommends.

    Open map

  • Fire history

    Share of the land inside a recorded wildfire perimeter

    7% has burned

    Most recently the 2025 Eaton Fire, which burned 4 acres here, one of 8 fires on record.

    Open map

  • Power line fire risk

    Share of the land in the High Fire-Threat District

    29% Elevated

    Utilities may shut off power in the CPUC High Fire-Threat District in fire weather, and homes outside it can lose power when their lines run through it.

    Open map

Land by hazard class

  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 1 April 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

Fires that burned here

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

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

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published 27 June 2025, local map 2 February 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Power line fire risk
California Public Utilities Commission
Published 23 February 2026

This site is independent and not affiliated with CAL FIRE or the CPUC, so for an official determination, check with the agency or your city or county. How we read the data

Nearby areas

Communities in ZIP code 91103

Neighboring ZIP codes

  1. 91103 37% Very High · this area
  2. 91001 36% Very High
  3. 91011 81% Very High
  4. 91101 No hazard zones
  5. 91104 1% Moderate · <1% Very High
  6. 91105 69% Very High
  7. 91206 83% Very High