California: Medi-Cal Question

TIA!

Medi-cal user. I earned slightly more money this year, and due to the online income charts I assumed I would not be renewed. However, I was reapproved. Also, it says, "The monthly Medi-Cal income limit for your household size is $4,533.00"--more than the limit listed online for my family size. Does the income limit vary because I live in an expensive County? Also, is some of my income "not countable" because it is used to pay for necessities? If so, what are they?

Of course, I want to increase my income, but for now want to stay within the allowable income threshold so I retain Medi-Cal until I drastically increase my income and get benefits from a new job.