Estimated Percent of People Age 0-17 in Poverty for Marshall County, OK was 20.60% in January of 2022, according to the United States Federal Reserve. Historically, Estimated Percent of People Age 0-17 in Poverty for Marshall County, OK reached a record high of 34.70 in January of 1989 and a record low of 19.90 in January of 2020. 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 Marshall County, OK - last updated from the United States Federal Reserve on May of 2024.