Resident Population in Teton County, MT was 6.43000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Teton County, MT reached a record high of 6.80000 in January of 1979 and a record low of 6.01700 in January of 2016. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Teton County, MT - last updated from the United States Federal Reserve on May of 2024.