Prairie Du Rocher, IL is a city located in Randolph County, Illinois and has a land area of 65.35 square miles (169.26 km2). The water area for the city is 2.56 square miles or 6.63 km2. There is one unique zip code in Prairie Du Rocher, Illinois and it is 62277. The area code(s) for Prairie Du Rocher is 618.
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