Which county is NOT a part of New York City?

Westchester County is not a part of New York City. New York City is made up of five boroughs, which are each coextensive with their respective counties: Manhattan (New York County), Brooklyn (Kings County), Queens (Queens County), Bronx (Bronx County), and Staten Island (Richmond County). Westchester County, located to the north of the city, is a separate county altogether.

In contrast, the other options represent the boroughs of New York City, each of which contributes to the city's governance and administration. Understanding the distinction between the counties and the structure of New York City is important for anyone involved in law enforcement or corrections.