Resident Population in Bergen County, NJ was 957.73600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Bergen County, NJ reached a record high of 957.73600 in January of 2023 and a record low of 826.12900 in January of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Bergen County, NJ - last updated from the United States Federal Reserve on May of 2024.