What is City Kid?
1.
A kid or teenager who lives in a crowded urban area where a high level of crime is common, and where the stereotypical types of people are easily seen.
George is a city kid. He spends all day watching his back and he takes public transportation. He also makes sure he does not draw attention to himself.
Jimmy is NOT a city kid. He flashed a 50 in a classmate's face, only to get
jumped right after school by theBloods .
See
2.
Someone who works in the City of London, which is the financial district of London (UK), like bankers. Normally infers they are earning an huge amount of money.
There are no positive or negative connotations unless City Kid is pre-fixed by an adjective that gives it an additional meaning.
Whose the guy in the Porsche? He's a City Kid.
See