|Menard County Illinois Cities/Towns - Athens, Atterberry, Fancy Prairie, Greenview, Oakford, Petersburg (County Seat), Tallula
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Menard County is a county located in the U.S. state of Illinois. As of 2000, the population was 12,486. Its county seat is Petersburg, Illinois.
Menard County was formed in 1839. The County was named for Pierre Menard, the first lieutenant governor of Illinois.