ZIP code 91770

Los Angeles County, including Rosemead and South San Gabriel

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Report created October 27, 2026 at www.firezones.info/zip/91770

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    1% 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

    <1% has burned

    The 2015 Lincoln Fire burned 12 acres here.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    Not elevated

    Outside the CPUC High Fire-Threat District, though a shutoff can still reach homes whose lines run through it.

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Land by hazard class

  1. Very High 59 acres · Local Responsibility Area 1%
  2. High 15 acres · Local Responsibility Area <1%
  3. Moderate 23 acres · Local Responsibility Area 1%
  4. Non-wildland 3,783 acres · Local Responsibility Area 89%
  5. Not mapped by CAL FIRE 346 acres · Mostly federal land 8%

4,227 acres of land in all, 3,881 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. 2015 Lincoln Fire Of 234 acres in all 12 acres

In all, 12 acres of ZIP code 91770 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 91770

Neighboring ZIP codes

  1. 91770 1% Very High · this area
  2. 90640 9% High · 3% Very High
  3. 90660 No hazard zones
  4. 91731 No hazard zones
  5. 91733 1% Moderate · <1% Very High
  6. 91755 <1% Moderate
  7. 91775 No hazard zones
  8. 91776 No hazard zones
  9. 91780 No hazard zones
  10. 91801 1% Moderate · <1% Very High