Southern Region

There are 11 counties and two Mutual Aid Regions I and VI, within the Southern Administration Region. Within the region there are 226 incorporated cities that include two nuclear plants. The total population of all cities and counties in the Southern Region is approximately 22,885,880.

Southern Region Response Operations covers two mutual aid regions and the following 11 Counties:

Mutual Aid Region I: Los Angeles, Orange, San Luis Obispo, Santa Barbara, Ventura
Mutual Aid Region VI: Imperial, Inyo, Mono, Riverside, San Bernardino, San Diego

Within the region are 226 incorporated cities, numerous tribal nations, small unincorporated communities, and special districts, and a total population of approximately 22,885,880. With the largest population in the State, Southern Region emergency management staff remain prepared ready to respond to any number of emergencies to provide coordination and assistance. Staff keep in close contact with their Operational Area counterparts, attend and assist in training exercises and courses, respond to incidents, provide connectivity with recovery and mitigation resources, and report issues and accomplishments up to headquarters.

The region includes large scale air and sea port operations, military installations, international borders, one active and one recently retired nuclear power plant, and a varied natural terrain that spans from beaches to mountains, deserts to forest land. Recent disasters that Southern Region staff have responded to include large scale wildfires, flooding and debris flows, earthquakes, oil and hazardous materials spills, wind storms, and explosions. Staff also monitor and respond to many events that garner national and worldwide attention, including sporting events, conventions, music festivals, and political conferences, and the Region is preparing for the upcoming 2028 Olympic Games in Los Angeles.

All Administrative Regions contacts are available on the Administrative Regions Interactive Map

Southern Region Events

The next MARAC meeting is Thursday, July 28th, 2022. If you want to be added to the MARAC distribution list, please email Deb Yoon at

Next LEPC Region I meeting is Wednesday, August 3rd, 2022

Next LEPC Region VI next meeting is Thursday, August 4th, 2022

2021 Southern Region Operational Area Emergency Management Website Links

Local Emergency Planning Committee (LEPC)

Cal OES Online Training Registration

Southern California Catastrophic Earthquake Response Plan (updates coming soon!)

Mutual Aid Regional Advisory Committee (MARAC)