ZIP code 93420

San Luis Obispo County, including Arroyo Grande, Los Berros, Callender and others

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Report created October 27, 2026 at www.firezones.info/zip/93420

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    43% Very High

    Most of the Very 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

    50% has burned

    Most recently the 2025 Lopez Fire, which burned 2 acres here, one of 66 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    47% 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 55,233 acres · 55,056 state, 177 local 43%
  2. High 30,341 acres · 29,151 state, 1,190 local 24%
  3. Moderate 15,900 acres · 12,537 state, 3,363 local 13%
  4. Non-wildland 4,002 acres · Local Responsibility Area 3%
  5. Not mapped by CAL FIRE 21,614 acres · Mostly federal land 17%

127,091 acres of land in all, 96,745 in the State Responsibility Area and 8,732 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

Largest fires

  1. 1985 Las Pilitas Fire Of 84,271 acres in all · Cause: Equipment use 37,984 acres
  2. 1917 Unnamed fire 10,052 acres
  3. 1988 Cdf 807 Fire 6,343 acres
  4. 1922 Unnamed fire Of 12,545 acres in all · Cause: Miscellaneous 5,563 acres
  5. 1929 Unnamed fire Of 16,280 acres in all · Cause: Miscellaneous 5,379 acres
  6. 1916 Unnamed fire Of 3,278 acres in all · Cause: Miscellaneous 3,091 acres
  7. 1995 Bald Mtn. Escape Fire 2,956 acres
  8. 1924 Unnamed fire Of 11,612 acres in all · Cause: Miscellaneous 1,875 acres
  9. 1956 Mallory #2 Fire 1,835 acres
  10. 1986 Ranchita Fire 1,831 acres

And 56 smaller fires. In all, 63,732 acres of ZIP code 93420 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 93420

Neighboring ZIP codes

  1. 93420 43% Very High · this area
  2. 93401 30% Very High
  3. 93433 5% Moderate
  4. 93444 20% Very High
  5. 93445 33% Very High
  6. 93449 54% Very High
  7. 93453 23% Very High
  8. 93454 46% Very High