Resident Population in Grand Traverse County, MI was 96.62500 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Grand Traverse County, MI reached a record high of 96.62500 in January of 2024 and a record low of 39.17500 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Grand Traverse County, MI - last updated from the United States Federal Reserve on March of 2026.