Estimated Percent of People Age 0-17 in Poverty for Granite County, MT was 15.60% in January of 2022, according to the United States Federal Reserve. Historically, Estimated Percent of People Age 0-17 in Poverty for Granite County, MT reached a record high of 28.80 in January of 1995 and a record low of 15.60 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Estimated Percent of People Age 0-17 in Poverty for Granite County, MT - last updated from the United States Federal Reserve on May of 2024.