Resident Population in Adams County, PA was 106.74800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Adams County, PA reached a record high of 106.74800 in January of 2023 and a record low of 56.93700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Adams County, PA - last updated from the United States Federal Reserve on May of 2024.