Guided hunts are available in the upper Sacramento Valley like Red bluff and Redding... ask the local Chambers of commerce for info.
Check with Sacramento Chamber as well
or on the internet for guides...
Un-guided
Hunter Liggett military base (permission required)
Big Sur (Hippy antis for locals)
Carmel Valley (Golf courses hate the pigs for obvious reasons)
San Simeon area (The Russian Wild pigs were released from the Hearst Menagerie at the San Simeon property... and they bred with feral pigs.)
NO there are no Russians left and the blood line is so diluted as to be unrecognizable. But fourth generation feral hogs are very good-sized and look very wild and very different from the farm pigs...
These are in very rough country and
bait 'n wait type hunts.
Holister will have some info as well.
Guided hunts over dogs in the northern part of the state is best and the meat is better because the guides
catch and castrate the young ones so they'll be tastier when they mature...
If you don't have pig dogs... go with the guided hunts for sure success.
Or bait 'n wait in a clearing in the other areas I listed above.
Always check with friendly locals.
Good luck
EDIT... I FORGOT TO MENTION TO CHECK WITH THE FOREST SERVICE AND FISH AND GAME DEPT. FOR GUIDES SERVICES.