I was reading the state GIS’ email list, and noticed that their Civil Boundaries ArcMap has linked to it Census population counts for 1990, 2000, 2010 and 2020 for those interested in population changes for counties and localities without having to download and link the Census data. Get it here:

https://gisservices.its.ny.gov/arcgis/rest/services/NYS_Civil_Boundaries/FeatureServer/