Poestenkill, New York

Poestenkill, New York
Location in Rensselaer County and the state of New York.
Coordinates: 42°41′15″N 73°31′17″W / 42.68750°N 73.52139°W / 42.68750; -73.52139
CountryUnited States
StateNew York
CountyRensselaer
Settled1770
IncorporatedMarch 2, 1848
Government
  Town SupervisorTom Russell
Area
  Total
32.57 sq mi (84.37 km2)
  Land32.35 sq mi (83.80 km2)
  Water0.22 sq mi (0.57 km2)
Elevation
928 ft (283 m)
Population
 (2020)
  Total
4,322
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP code
12140
Area code518
FIPS code36-58805
GNIS feature ID0979380
Websitepoestenkillny.com

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 breathe); he owned a farm and a mill on the Poestenkil creek.

Among the earliest settlers in the town was Archelaus Lynd. He leased 300 acres of land from the Van Rensselaers and made his first clearing in the area of Hillside Cemetery, which was known as The Lynd Cemetery until about 1900. The Whyland and Ives families were other early settlers.