Resident Population in Atlantic County, NJ was 275.21300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Atlantic County, NJ reached a record high of 275.63800 in January of 2022 and a record low of 175.04300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Atlantic County, NJ - last updated from the United States Federal Reserve on May of 2024.