Resident Population in Monroe County, NY was 748.48200 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Monroe County, NY reached a record high of 757.79000 in January of 2020 and a record low of 701.21500 in January of 1987. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Monroe County, NY - last updated from the United States Federal Reserve on June of 2024.