http://www.familyhistory101.com/map_census.html I thought these maps were of interest and noticed according to this site, Rensselaer County was enumerated with Albany county in 1790, is that correct? Select New York census maps and click on the 1790 census year just down from the New York map and only about 15 counties are shown. For 1800 Rensselaer appears to be enumerated. Lois in AZ