Rensselaer County is a county in the U.S. state of New York. As of the 2020 census, the population was 161,130. Its county seat is Troy. The county is named in honor of the family of Kiliaen van Rensselaer, the original Dutch owner of the land in the area.
Rensselaer County is part of the Albany-Schenectady-Troy, NY Metropolitan Statistical Area.
Wikipedia https://en.wikipedia.org/wiki/Rensselaer_County,_New_York
Coordinates 42°43'42.282" N -73°41'30.436" E