Clay County Post Offices

332 S Main St
Clay City, Illinois 62824

807 Broad St
Edgewood, Illinois 62426

312 E North Ave
Flora, Illinois 62839

5253 Old Ingraham Rd
Ingraham, Illinois 62434

150 E Chestnut St
Louisville, Illinois 62858

102 N Main St
Xenia, Illinois 62899

Clay County

There are 6 US Post Offices in Clay County serving a total of 14,487 residents equating to 2,415 residents per post office. It's estimated that approximately 23,123 packages are handled across the 6 county post offices annually. Clay County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 13,815. Its county seat is Louisville. In 1950, the U.S. Census Bureau placed the mean center of U.S. population in Clay County."