Courthouses in Oshkosh, Wisconsin, the US. Courthouses locations in Oshkosh, Wisconsin. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Lawyer Real estate School Travel University All courthouses in Oshkosh Winnebago County Circuit Court Courthouse +1 920-236-4808 415 Jackson Street, Oshkosh, Wisconsin 54901 Write a review Phone Website Directions Winnebago County Coroner Courthouse +1 920-236-4804 448 Algoma Boulevard, Oshkosh, Wisconsin 54901 Write a review Phone Website Directions Winnebago Family Court Counsel Courthouse +1 920-236-4606 415 Jackson Street, Oshkosh, Wisconsin 54901 Write a review Phone Directions