Resident Population in Oakland County, MI was 1270.42600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Oakland County, MI reached a record high of 1272.41300 in January of 2020 and a record low of 907.87100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Oakland County, MI - last updated from the United States Federal Reserve on May of 2024.