California, Eastern Oregon, Colorado, Arizona, etc.
DIY and five days of hunting and you will see bears in a whole bunch of areas.
The northern wilderness areas of CA are home to a ton of beras, CA has the second largest population of black bears next only to AK if I am not mistaken.
I have glassed four bears within a mile from one location within minutes, and in the thicker areas where glassing wasn't as easy because of the timber.
For guided I have no idea, besides AK tidal flat hunts and possibly BC for the logging units.
Good luck