Baraboo is the largest city in, and the county seat of Sauk County, Wisconsin, USA. It is situated on the Baraboo River. Its 2010 population was 14,275. Baraboo is also the principal city of the Baraboo Micropolitan Statistical Area. Baraboo is home to the Circus World Museum, the former headquarters and winter home of the Ringling Brothers circus and now the largest library of circus information in the United States. This living museum has a collection of circus wagons, and occasionally hosts the Great Circus Parade of these artifacts through the streets of Baraboo.