The California Highway Patrol operates approximately 30 aircraft out of about 8 different locations throughout the state. The primary aircraft in the CHP fleet are Cessna T206H Stationairs (fixed wing) and Eurocopter AS 350 helicopters. A handfull of Bell helicopters and a Cessna 182 round out the fleet.
The CHP fixed wing and rotorwing aircraft are fairly evenly spread out over 7 divisions around the state. These divisions include;
Northern Div. (Redding Ca.) 2- helicopters, 2- fixed wing
Central Div. (Fresno Ca.) 1- helicopter, 2- fixed wing
Golden Gate Div. (Napa Ca.) 2- helicopters, 2- fixed wing airplanes
Coastal Div. (Paso Robles Ca.) 1- helicopter, 2- fixed wing aircraft
Inland Div. (Apple Vallley Ca.) 2- fixed wing aircraft
Southern Div. (Fullerton Ca.) 4- helicopters, 1- fixed wing
Valley Div. (Auburn Ca.) 2- helicopters, 2- fixed wing
In total the California Highway Patrol operates 12- Eurocopter AS350 helicopters, 2- Bell 206L4 (Long Rangers), 1- Bell OH-58 helicopter, 15- Cessna T206H Stationair airplanes, and 1- Cessna 182.
CHP helicopters perform numerous rescues each year in some of the smaller counties and jurisdictions throughout the state, where they are often the only helicopter available.
For an excellent look at the fixed wing side of CHP aviation, including some of the fixed wing history, check out this article at planeandpilogmag.com.