Koshkonong, MO is a city located in Oregon County, Missouri and has a land area of 102.84 square miles (266.35 km2). The water area for the city is 0.06 square miles or 0.16 km2. There is one unique zip code in Koshkonong, Missouri and it is 65692. The area code(s) for Koshkonong is 417.
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