ZIP code 92078

San Diego County, including San Marcos, Lake San Marcos and Harmony Grove

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Report created October 31, 2026 at www.firezones.org/zip/92078

Summary

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    1. Very High 7,038 acres · 1,175 state, 5,863 local 65%
    2. High 523 acres · Local Responsibility Area 5%
    3. Moderate 442 acres · Local Responsibility Area 4%
    4. Non-wildland 2,766 acres · Local Responsibility Area 26%

    10,770 acres of land in all, 1,176 in the State Responsibility Area and 9,594 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

    1. 1996 Harmony Fire 9,359 acres in total · Cause: Equipment use 4,200 acres here
    2. 1943 Unnamed fire 40,248 acres in total 4,096 acres here
    3. 2014 Cocos Fire 1,995 acres in total 1,512 acres here
    4. 1988 Outside Origin #11 Fire Cause: Miscellaneous 247 acres here
    5. 1994 Questhaven Fire 65 acres here
    6. 2007 Coronado Hills Fire 59 acres in total 52 acres here
    7. 1985 Outside Origin #5 Fire Cause: Miscellaneous 36 acres here
    8. 1935 Unnamed fire 939 acres in total 8 acres here

    The most recent was the 2014 Cocos Fire, which burned 1,512 acres here. In all, 5,628 acres of ZIP code 92078 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 92078

Neighboring ZIP codes

  1. 92078 65% Very High · this area
  2. 92009 42% Very High
  3. 92010 46% Very High
  4. 92024 37% Very High
  5. 92029 78% Very High
  6. 92069 62% Very High
  7. 92081 23% Very High
  8. 92083 5% Moderate
  9. 92084 63% Very High
  10. 92096 95% 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