Rio Zip Codes - Knox County IL

Rio, IL Zip Code Map

Rio, IL is a city located in Knox County, Illinois and has a land area of 39.18 square miles (101.48 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Rio, Illinois and it is 61472. The area code(s) for Rio is 309.

Zip Codes for Rio, IL (1)

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61472 Rio Knox

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