Resident Population in Martin County, NC was 21.44700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Martin County, NC reached a record high of 26.18700 in January of 1981 and a record low of 21.44700 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Martin County, NC - last updated from the United States Federal Reserve on May of 2024.