Resident Population in Smith County, MS was 14.09900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Smith County, MS reached a record high of 16.52300 in January of 2011 and a record low of 13.56100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Smith County, MS - last updated from the United States Federal Reserve on May of 2024.