ZIP code 91010

Los Angeles County, including Duarte, Irwindale, Azusa and others

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Report created October 27, 2026 at www.firezones.info/zip/91010

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    35% 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.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    33% has burned

    Most recently the 2016 Fish Fire, which burned 860 acres here, one of 16 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    32% Extreme

    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.

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Land by hazard class

  1. Very High 1,446 acres · Local Responsibility Area 35%
  2. High 117 acres · Local Responsibility Area 3%
  3. Moderate 279 acres · Local Responsibility Area 7%
  4. Non-wildland 1,990 acres · Local Responsibility Area 48%
  5. Not mapped by CAL FIRE 313 acres · Mostly federal land 8%

4,144 acres of land in all, 3,831 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

Largest fires

  1. 1980 Stable Fire Of 6,049 acres in all 1,145 acres
  2. 1958 Unnamed fire Of 13,944 acres in all 944 acres
  3. 2016 Fish Fire Of 4,246 acres in all · Cause: Miscellaneous 860 acres
  4. 1968 Canyon Inn Fire Of 19,056 acres in all 436 acres
  5. 1924 San Gabriel Fire Of 43,050 acres in all 277 acres
  6. 1942 Hiyon #135/Vantasell Fire 184 acres
  7. 1953 Maddock Fire Of 558 acres in all 174 acres
  8. 1952 Spinks Fire Of 179 acres in all 153 acres
  9. 1916 Duarte Fire Of 179 acres in all 141 acres
  10. 1975 Star Pine Fire 115 acres

And 6 smaller fires. In all, 1,370 acres of ZIP code 91010 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 91010

Neighboring ZIP codes

  1. 91010 35% Very High · this area
  2. 91006 13% Very High
  3. 91008 80% Very High
  4. 91016 43% Very High
  5. 91702 7% Very High
  6. 91706 4% High