South Beloit, IL is a city located in Winnebago County, Illinois and has a land area of 25.05 square miles (64.88 km2). The water area for the city is 0.36 square miles or 0.93 km2. There is one unique zip code in South Beloit, Illinois and it is 61080. The area code(s) for South Beloit is 815/779.
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