ZIP code 94587

Alameda County, including Union City and Hayward

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Report created October 31, 2026 at www.firezones.org/zip/94587

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    Map
    1. High 1,723 acres · 1 state, 1,722 local 14%
    2. Moderate 160 acres · Local Responsibility Area 1%
    3. Non-wildland 10,622 acres · Local Responsibility Area 85%
    4. Not mapped by CAL FIRE 1 acre · Mostly federal land <1%

    12,506 acres of land in all, 1 in the State Responsibility Area and 12,503 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

    Fires CAL FIRE has recorded here

    No recorded fires

    CAL FIRE has no record of a fire that burned an acre or more here.

    Map

Nearby areas

Communities in ZIP code 94587

Neighboring ZIP codes

  1. 94587 14% High · this area
  2. 94536 31% High
  3. 94542 53% High
  4. 94544 11% High
  5. 94545 No hazard zones
  6. 94552 10% Very High
  7. 94555 No hazard zones

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published June 27, 2025, local map February 2, 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published July 28, 2026

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