Resident Population in Allegany County, NY was 46.65100 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Allegany County, NY reached a record high of 52.30000 in January of 1979 and a record low of 45.91500 in January of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Allegany County, NY - last updated from the United States Federal Reserve on May of 2024.