Armonk

Armonk is a hamlet and census-designated place in the town of North Castle, New York located in Westchester County. As of the 2010 census, Armonk's CDP population is 4,330 and it has a total area of 6. 1 square miles, of which 6. 0 square miles is land and 0. 077 square miles, or 1. 54 percent, is water.