ZIP code 94521

Contra Costa County, including Concord

Search for an address

Report created October 27, 2026 at www.firezones.info/zip/94521

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    33% High · 1% Very High

    Most of the 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

    <1% has burned

    The 2013 Kirker Fire burned 2 acres here.

    Open map

  • Power line fire risk

    Share of the land in the High Fire-Threat District

    22% Elevated · <1% 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.

    Open map

Land by hazard class

  1. Very High 83 acres · 13 state, 70 local 1%
  2. High 2,068 acres · 608 state, 1,460 local 33%
  3. Moderate 567 acres · 44 state, 523 local 9%
  4. Non-wildland 3,476 acres · Local Responsibility Area 56%
  5. Not mapped by CAL FIRE 2 acres · Mostly federal land <1%

6,197 acres of land in all, 666 in the State Responsibility Area and 5,529 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. 2013 Kirker Fire Of 478 acres in all · Cause: Power lines 2 acres

In all, 2 acres of ZIP code 94521 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 94521

Neighboring ZIP codes

  1. 94521 33% High · 1% Very High · this area
  2. 94517 88% Very High
  3. 94518 11% Moderate · 1% High
  4. 94519 6% Moderate
  5. 94565 34% High · 1% Very High
  6. 94598 11% Very High