[2] It was named for the historic Winnebago people, a federally recognized Native American tribe now known as the Ho-Chunk Nation.

The region was occupied by several Native American tribes in the period of European encounter, including the Sauk, Fox, Menominee, and Ojibwa (known as Chippewa in the US).

European and American settlement encroached on their traditional territories, and the United States negotiated treaties in the mid-19th century to keep pushing the Indians to the west.

[4] It means 'people dwelling by the fetid or ill-smelling water', which may also refer to a sulfur spring.

A leader of the Menominee in the region, he was successful in gaining authorization from the federal government for 2500 of his people to remain in Wisconsin, at a time when the government was pushing for their removal west of the Mississippi River.

[7] Wittman Regional Airport (KOSH) serves the county and surrounding communities.

Brennand Airport (79C) in the Town of Clayton is a major recreational aircraft hub year-round.

[14] Additionally, there were 123 reported induced abortions performed on women of Winnebago County residence in 2017.

It meets on the third Tuesday of each month at the Winnebago County Courthouse in Oshkosh.