Motor Vehicles Registration Renewals

RENEW YOUR REGISTRATION(S) EARLY TO ENSURE DELIVERY BEFORE THE PENALTY AND ENFORCEMENT DATE. You have several different options to renew your vehicle registration.

Online

  • When renewing a vehicle registration online, a PIN or Audit Number is required to complete your transaction.
    • The PIN can be found on the courtesy renewal notice.  If your renewal notice does not have a PIN or there is a "stop" sign the notice, the vehicle registration does not qualify for online renewal.
    • The Audit Number can be found on the lower portion of your vehicle registration.Sample Registration Audit Number
  • Half year renewals and apportioned vehicles are not eligible for online renewal.

Online Registration Renewal

In Person

To pay in person, visit one of our offices at the following locations:

Trosper-Hoyt Building
822 Douglas St., Suite 102
Sioux City, IA 51101

Schedule an appointment

Little Courthouse 
105 N. Second St.
Anthon, Iowa

Located next to the Anthon Post Office

  • DRIVE-UP WINDOW
    • The drive-up window at the Sioux City office is located on the south side of the Trosper-Hoyt building. 
    • Cash, check, and cards are accepted at the drive-up window for registration renewals. 
      • Cash payments over $2,000 are required to come inside to the lobby.
      • Debit cards have a $2 added surcharge. Credit cards have a 2.25% added surcharge.   Visa, Mastercard, or Discover accepted.
  • If you are not the owner of the vehicle being renewed, you must provide the plate number.  The postage will be charged, and the new registration will be mailed to the owner at the address on file.  

By Mail

  • If mailing your payment, make sure you have the proper U.S. Postal Service postmark date and allow ample time for processing and delivery.
  • Include the bottom portion of your renewal notice. 
  • Make checks payable to Woodbury County Treasurer.

Payments by check/money order, payable to Woodbury County Treasurer, can be mailed to:

Woodbury County Treasurer
822 Douglas St., Suite 102
Sioux City, Iowa 51101

Drop Box

  • An afterhours drop box is available at the Trosper-Hoyt Building by the drive-up window.  Include the bottom portion of your renewal notice with your check or money order, payable to Woodbury County Treasurer.

** When paying by mail or drop box, always use a check or money order. **


**A Fee of $30.00 will be charged for all dishonored checks, drafts or orders as prescribed in Iowa Code 554.3512. **

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This content was printed from the County website at woodburycountyiowa.gov on December 15, 2025.