Percent of Population Below the Poverty Level (5-year estimate) in Prairie County, MT was 22.30% in January of 2022, according to the United States Federal Reserve. Historically, Percent of Population Below the Poverty Level (5-year estimate) in Prairie County, MT reached a record high of 22.30 in January of 2022 and a record low of 10.10 in January of 2017. Trading Economics provides the current actual value, an historical data chart and related indicators for Percent of Population Below the Poverty Level (5-year estimate) in Prairie County, MT - last updated from the United States Federal Reserve on June of 2024.