Resident Population in Gloucester County, NJ was 308.42300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Gloucester County, NJ reached a record high of 308.42300 in January of 2023 and a record low of 172.68100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Gloucester County, NJ - last updated from the United States Federal Reserve on May of 2024.