Resident Population in Essex County, NY was 36.77500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Essex County, NY reached a record high of 39.35900 in January of 2010 and a record low of 34.50000 in January of 1971. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Essex County, NY - last updated from the United States Federal Reserve on May of 2024.