General phone
Town Clerk
(518) 283-5100
Official source ↗Checked Sep 14, 2026
Town guide · Poestenkill
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ZIP code12140 Wikidata
Area code518 Wikidata
About Poestenkill
Town in Rensselaer County, New York1770Established
4,322Population
32.6 sq miArea
928 ftElevation
Poestenkill is a town in Rensselaer County, New York, United States. The population was 4,322 at the 2020 census. The town is southeast of Troy and is centrally located in the county. The town is named after the Poesten Kill, an important stream in the area. The phrase poesten kil (with only one l) is traditionally said to be Dutch for "foaming water" or "foaming creek". While kil is, indeed, Dutch for "water" or "creek", Dutch dictionaries do not support the claim of poest meaning "foam". It seems more likely that the creek was named after the nickname Poest for the 17th-century local farmer and miller Jan Barentsen Wemp, who had a pimple (poest) or had difficulty breathing (poesten = to b…
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
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Town essentials
Official information, kept current with help from neighbors.
General phone
Town of Poestenkill
(518) 283-5100
Official source ↗Checked Sep 14, 2026
General phone
Water Department
(518) 283-5100
Official source ↗Checked Sep 14, 2026