Resident Population in Toole County, MT was 5.13300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Toole County, MT reached a record high of 5.90000 in January of 1971 and a record low of 4.70900 in January of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Toole County, MT - last updated from the United States Federal Reserve on May of 2024.