Clay County is a county located in the U.S. state of Arkansas. As of the most recent data available, the county has a population of approximately 17,609 people, with a population density of about 27.56 persons per square mile.
The county spans a total land area of 639.00 square miles (1,655.00 square kilometers). The administrative center and county seat is , which often serves as a hub for local governance and services. The largest city within the county by population is Piggott.
Geographically, Clay County experiences varied elevations, with its highest point at Pollard 339 ft and its lowest point at Knobel 280 ft. The region operates in the UTC-6.