Population Estimate, Total, Hispanic or Latino (5-year estimate) in Fallon County, MT was 23.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Hispanic or Latino (5-year estimate) in Fallon County, MT reached a record high of 61.00000 in January of 2018 and a record low of 11.00000 in January of 2012. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Hispanic or Latino (5-year estimate) in Fallon County, MT - last updated from the United States Federal Reserve on May of 2024.