Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Prairie County, MT was 1151.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Prairie County, MT reached a record high of 1356.00000 in January of 2016 and a record low of 990.00000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Prairie County, MT - last updated from the United States Federal Reserve on May of 2024.