Is Fresno NorCal or SoCal?

I’ve been wondering if Fresno is NorCal or SoCal because some say it’s NorCal and I know it’s in the Central Valley but I don’t buy that it’s NorCal and believe it’s the northern end of SoCal plus there’s a Vons there (a SoCal-Based Grocery Store) and it’s only a 3 hr drive from the San Fernando Valley in LA where I live while most NorCal cities are at least a 4-5 hr drive. I know that Modesto and Sacramento are definitely NorCal and Bakersfield is definitely SoCal but what the heck is Fresno?