I noticed jerry from Seinfeld always had like 5 locks on his door is that normal in NYC?

You do know it was a comedy show and not real, right?

Perhaps since he was so neurotic, they thought it would be a funny statement to have him have 5 locks on his door. Is it normal? Maybe some people do it.

EDIT- I just looked back at some of your old posts and you seem to have a fixation with locks. Does this have anything to do with that?

No, it's not the norm. It was a sitcom and not to be taken seriously.

Are you still worried about the locksmith breaking in, the one you asked about last month?
I'm a little worried now that you are perhaps getting into a needlessly anxious state over him. Would you be willing to tell us what is going on with him, and what your living situation is (apartment, house, alone, roommate, child, city, small town, country, first floor, above first floor)?