Resident Population in Monroe County, PA was 166.05300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Monroe County, PA reached a record high of 170.08300 in January of 2019 and a record low of 45.42200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Monroe County, PA - last updated from the United States Federal Reserve on May of 2024.