Percent of Population Below the Poverty Level (5-year estimate) in Marshall County, TN was 15.60% in January of 2022, according to the United States Federal Reserve. Historically, Percent of Population Below the Poverty Level (5-year estimate) in Marshall County, TN reached a record high of 17.90 in January of 2012 and a record low of 13.50 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 Marshall County, TN - last updated from the United States Federal Reserve on May of 2024.