ZIP code 93420

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

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Report created October 31, 2026 at www.firezones.org/zip/93420

Summary

  • Fire hazard severity zones

    Share of the land in each CAL FIRE 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 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

    The 10 largest of 66 fires that burned here

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

    And 56 smaller fires. The most recent was the 2025 Lopez Fire, which burned 2 acres here. 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

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

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