Poestenkill, NY is a city located in Rensselaer County, New York and has a land area of 7.15 square miles (18.52 km2). The water area for the city is 0.02 square miles or 0.05 km2. There is one unique zip code in Poestenkill, New York and it is 12140. The area code(s) for Poestenkill is 518.
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