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Audit Date Issued Audit Number
Oregon County 09/08/2021 2021-069
Oregon County Financial Statements 09/11/2020 2020-068
Oregon County Financial Statements 09/30/2016 2016-102
Oregon County 06/09/2016 2016-035
South Central Solid Waste Management District Region P 05/14/2013 2013-039
Date of Registration Bonds Issued By Amount of Issue
05/24/2024 Oregon-Howell R-III School District $1,350,000.00
12/08/2021 Thayer R-II School District $3,260,000.00
12/08/2021 Oregon-Howell R-III School District $1,125,000.00
07/17/2017 Thayer R-II School District $3,900,000.00
07/17/2017 Oregon-Howell R-III School District $1,650,000.00
Political Subdivision Assessed Valuation Actual Tax
Oregon County Ambulance District $127,042,247.00 0.0000
Thayer SRD Oregon County $47,957,171.00 0.2090
City of Alton $7,933,796.00 0.4764
City of Koshkonong $1,177,880.00 0.8782
City of Thayer $19,186,577.00 0.4801
Name Type Date Received
City of Alton Municipalities 12/22/2025
Oregon County Library District Tax Supported Public Libraries 08/28/2025
City of Koshkonong Municipalities 07/17/2025
Oregon County Health Department Health Centers 07/16/2025
Thayer SRD Oregon County Special Road Districts 07/03/2025
Year Reported Plan / Project Name Approved By

This information is currently available for taxing authorities in this county. Some taxing authorities do not provide information to the State Auditor's Office. For that reason, taxpayers may be aware of taxes that are assessed in their local area but that are not included in the data above. Additionally, some political subdivisions such as school districts affect multiple counties, but only taxpayers in the school district are taxed for those entities, rather than all county taxpayers.