Maps

Perry County is a county located in Southeast Missouri in the United States. As of the 2010 U.S. Census, the county’s population was 18,971. Its county seat is Perryville. The county was officially organized on November 16, 1820 (effective January 1, 1821) from Ste. Genevieve County and was named after Oliver Hazard Perry, a naval hero of the War of 1812.