*** Immediate notice - The Winnebago County Treasurer's Office will continue to have staff available to conduct daily business; however, for the safety of our staff and the public, FACE TO FACE COUNTER SERVICE HAS BEEN SUSPENDED.  For your convenience there is a drop box next to the enterance of the County Administration Building located at 112 Otter Ave, Oshkosh WI 54901.

Available Services/Information

  • Pay Taxes Online - There is a fee of 2.39% of the payment amount for credit card payments, $3.95 for debit card payments and $1.50 for an e-check payment.

  • Property Information Lookup - This link will include current owership information for Winnebago County properties and will only include City of Oshkosh, Neenah, Menasha or Appleton properties if there is a delinquent tax balance. If you are looking for current ownership information please use one of the links below.

Other Cities Tax Information



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Mary E. Krueger-Treasurer

112 Otter Ave
Room 116
Oshkosh, WI 54901
Phone: (920) 232-3420
Mailing address:
PO BOX 2806
Oshkosh WI 54903-2806

Office Email

2020 Holiday Schedule:
January 1 - New Years Day
April 10 - Good Friday
May 25 - Memorial Day
July 4 - Fourth of July
September 7 - Labor Day
November 26 & 27 Thanksgiving and day after
December 24 & 25 Christmas Eve and Christmas Day
December 31 New Years Eve