Clay County is a county located in the U.S. state of Arkansas. As of the 2010 census, the population was 16,083. The county has two county seats, Corning and Piggott. It is a dry county, in which the sale of alcoholic beverages is restricted or prohibited.HistoryWhen Clay County was created as Arkansas's 67th county on March 24, 1873, it was named Clayton County, after John M. Clayton, then a member of the Arkansas Senate and a brother of then-U.S. Senator Powell Clayton, though some sources suggest it may have been named for Powell Clayton instead.Two years later on December 6, 1875, the county's name was shortened to "Clay" by the Arkansas General Assembly. Some claim it was renamed for the statesman Henry Clay, while others say John M. Clayton remained its official namesake. The name change apparently was inspired by lingering distrust of Powell Clayton, as he had declared martial law and suspended elections in the county in 1868 when he was Governor of Arkansas and it was still part of Greene County.