Rio is a village in Columbia County, Wisconsin, United States. The population was 1,119 at the 2020 United States Census. It is part of the Madison Metropolitan Statistical Area. The village rests primarily in the town of Otsego. The Village of Rio calls itself "Camper Country USA" due to several campgrounds located near the village. Rio is halfway betw…Rio is a village in Columbia County, Wisconsin, United States. The population was 1,119 at the 2020 United States Census. It is part of the Madison Metropolitan Statistical Area. The village rests primarily in the town of Otsego. The Village of Rio calls itself "Camper Country USA" due to several campgrounds located near the village. Rio is halfway between Columbus and Portage on Highway 16.
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