ZIP code 94507

Contra Costa County, including Alamo and Castle Hill

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Report created October 27, 2026 at www.firezones.info/zip/94507

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    50% High · 5% Very High

    Most of the High land is in the State Responsibility Area, where the State Fire Marshal's zones apply.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    1% has burned

    The 1961 Parker Fire burned 54 acres here.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    26% 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 353 acres · State Responsibility Area 5%
  2. High 3,600 acres · 2,859 state, 741 local 50%
  3. Moderate 770 acres · 77 state, 693 local 11%
  4. Non-wildland 2,444 acres · Local Responsibility Area 34%

7,167 acres of land in all, 3,289 in the State Responsibility Area and 3,878 in the Local. 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. 1961 Parker Fire Of 224 acres in all 54 acres

In all, 54 acres of ZIP code 94507 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 94507

Neighboring ZIP codes

  1. 94507 50% High · 5% Very High · this area
  2. 94506 13% Very High
  3. 94517 88% Very High
  4. 94526 16% High · <1% Very High
  5. 94528 52% High · 1% Very High
  6. 94556 49% Very High
  7. 94583 5% Very High
  8. 94595 37% High
  9. 94596 23% High
  10. 94598 11% Very High