Resident Population in Clay County, NE was 6.11600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Clay County, NE reached a record high of 8.50000 in January of 1972 and a record low of 6.04700 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Clay County, NE - last updated from the United States Federal Reserve on May of 2024.