Resident Population in Suffolk County, MA was 768.42500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Suffolk County, MA reached a record high of 805.91500 in January of 2019 and a record low of 649.95300 in January of 1992. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Suffolk County, MA - last updated from the United States Federal Reserve on May of 2024.