Armonk is a suburb of New York City with a population of 4,381. Armonk is in Westchester County and is one of the best places to live in New York. Living in Armonk offers residents a sparse suburban feel and most residents own their homes. To the casual passerby, Armonk’s town site amidst seemingly undisturbed open space seems random, perhaps even unexpected—and that's just its draw. There are a lot of restaurants and parks. The public schools in Armonk are highly rated.