Los Osos

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 4,266 acres · 3,903 state, 363 local 53%
  2. High 452 acres · 66 state, 386 local 6%
  3. Moderate 2,095 acres · 1,952 state, 143 local 26%
  4. Non-wildland 1,214 acres · Local Responsibility Area 15%
  5. Not mapped by CAL FIRE 32 acres · Mostly federal land <1%

  8,059 acres of land in all, 5,921 in the State Responsibility Area and 2,106 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

  Map
  1. 1984 Swift Le-7 Fire 426 acres in total 114 acres here

  In all, 114 acres of Los Osos 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