Resident Population in Oswego County, NY was 118.16200 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Oswego County, NY reached a record high of 124.80200 in January of 1993 and a record low of 100.89700 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Oswego County, NY - last updated from the United States Federal Reserve on May of 2024.