Estimated Percent of Related Children Age 5-17 in Families in Poverty for Yellowstone County, MT was 9.40% in January of 2022, according to the United States Federal Reserve. Historically, Estimated Percent of Related Children Age 5-17 in Families in Poverty for Yellowstone County, MT reached a record high of 15.70 in January of 1989 and a record low of 9.30 in January of 2016. Trading Economics provides the current actual value, an historical data chart and related indicators for Estimated Percent of Related Children Age 5-17 in Families in Poverty for Yellowstone County, MT - last updated from the United States Federal Reserve on May of 2024.