Resident Population in Piscataquis County, ME was 17.48600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Piscataquis County, ME reached a record high of 18.69000 in January of 1990 and a record low of 16.28500 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Piscataquis County, ME - last updated from the United States Federal Reserve on May of 2024.