|Franklin County Illinois Cities/Towns - Benton (County Seat), Buckner, Christopher, Ewing, Freeman Spur, Hanaford, Macedonia, North City, Orient, Royalton, Sesser, Thompsonville, Valier, West City, West Frankfort, Zeigler
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Franklin County is a county located in the U.S. state of Illinois. As of 2016, the population was 39,156. Its county seat is Benton.
Franklin County was established on January 2, 1818. It was named for Benjamin Franklin.