Resident Population in Clay County, AR was 14.20100 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Clay County, AR reached a record high of 21.20000 in January of 1976 and a record low of 14.20100 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Clay County, AR - last updated from the United States Federal Reserve on May of 2024.