Resident Population in Daniels County, MT was 1.62500 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Daniels County, MT reached a record high of 3.08300 in January of 1970 and a record low of 1.62500 in January of 2024. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Daniels County, MT - last updated from the United States Federal Reserve on April of 2026.