How to request a delinquent tax list in Wisconsin

Every Wisconsin county keeps a list of properties with unpaid taxes, and it is a public record. Ask for it under the Wisconsin Public Records Law with the free letter below, or pick your county for a letter already addressed to it.

Wisconsin at a glance

Who to ask
The office that collects property taxes in the county. Depending on the county that is the treasurer, tax collector or tax commissioner.
The law
The Wisconsin Public Records Law.
Response time
The office must respond within 10 business days. A response can be the file, a date it will be ready, or a cost estimate.
Who can ask
Anyone can ask. You do not need to live in Wisconsin.
Cost
Offices can charge for copies or staff time on a large data pull. The letter asks for an itemized estimate first.

Your Wisconsin records request letter

Type the county name and your details. It updates as you type.

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Email subject: Public records request: delinquent property tax list, [County name], Wisconsin

November 7, 2026

Records Custodian, [County name] property tax office
[County name], Wisconsin

Subject: Public records request: delinquent property tax list, [County name], Wisconsin

Dear Records Custodian:

Under the Wisconsin Public Records Law, I request a copy of the current list of real property accounts with delinquent property taxes in [County name], Wisconsin.

Please include these fields, to the extent your office keeps them:
- Parcel or account number
- Owner name
- Property (situs) address
- Owner mailing address
- Tax years that are delinquent
- Amount owed (by year, if your office keeps it that way)

I would like the list in electronic form (CSV or Excel), sent by email to [Your email]. A file your office already produces is fine. I am not asking you to create a new record.

If there is a charge, please send me an itemized estimate first if it will be more than $25.

If the list will not be ready within 10 business days, please let me know when I can expect it.

If you withhold any part of the list, please tell me which exemption applies and send the rest.

Thank you for your help.

Sincerely,

[Your name]
[Your mailing address]
[Your email]

How to send it

  1. Check what the county already posts. Many tax offices publish the delinquent list on their website or in a newspaper notice before a tax sale. If it is posted, you may not need a request at all.
  2. Find the records contact. Look on the tax office's website for an open-records email address or online request portal. If the office has its own form, you can paste this letter into it.
  3. Send the letter and keep a copy. Note the date you sent it. In Wisconsin, the office has 10 business days to respond, and a response can be the file, a date it will be ready, or a cost estimate.
  4. Approve or question the estimate. Large data pulls can carry a fee for staff or computer time. Ask what it covers before you pay.

Or skip the wait

For many Wisconsin counties we already have the list. Each county page shows a free sample, and where we sell the list, the whole file for $27, or $39 with deal scores. See the Wisconsin counties we have

Pick your Wisconsin county