|Perry County Illinois Cities/Towns -
Cutler, Du Quoin, Pinckneyville (County Seat), St. Johns, Sunfield, Swamwick, Tamaroa, Willisville
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Perry County is a county located in the U.S. state of Illinois. As of 2016, the population was 21,357. Its county seat is Pinckneyville.
Perry County was formed in 1827. It was named in honor of Oliver Hazard Perry who defeated the British fleet at the decisive Battle of Lake Erie in the War of 1812.