 winnebago county is a county in the u.s. state of wisconsin. as of the 2010 census, the population was 166,994. its county seat is oshkosh. winnebago county comprises the oshkosh-neenah, wi metropolitan statistical area, which is include in the appleton-oshkosh-neenah, wi combined statistical area. ==history== the name winnebago is of algonquin origin and means 'people dwelling by the fetid or ill-smelling water', which may refer to a sulfur spring.  the county seat, oshkosh, was incorporated as a city in 1853, when it already had a population of nearly 2,800.history of oshkosh, wisconsin ==geography== according to the u.s. census bureau, the county has a total area of , of which  is land and  (24.9%) is water. ===adjacent counties=== *waupaca county - northwest *outagamie county - northeast *calumet county - east *fond du lac county - south *green lake county - southwest *waushara county - west ===major highways=== {| | *20px u.s. highway 41 *20px u.s. highway 45 *20px u.s. highway 10 *[[i
1840_establishments_in_the_United_States Populated_places_established_in_1840 Winnebago_County,_Wisconsin Wisconsin_counties