Waynesville, IL is a city located in Dewitt County, Illinois and has a land area of 30.09 square miles (77.93 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Waynesville, Illinois and it is 61778. The area code(s) for Waynesville is 217/309.
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