Marathon County Uniform Addressing

Welcome to Marathon County’s official Uniform Addressing website!

Here is where you’ll find the latest updates on the Uniform Addressing project, downloadable checklistsmaps, and reference guideslinks to helpful resources, and more. We hope you’ll check back often to keep yourself informed about this county-wide project.

Updating and using your new address online 

When your sign is installed, your address is already updated with the national US Postal Service database. Many companies and online businesses access the USPS data through a third-party vendor that issues updates on their own schedule. This may cause a delay in your new address being updated and verified by the company or online business. 

Installation Status Map


View our Frequently Asked Questions (FAQS) webpage for answers to common questions about the Uniform Addressing project, and check out our Documents webpage for downloadable Quick Reference Guides for residents and business owners.

Visit our Assistance webpage for details on in-person and phone support provided by the Marathon County Public Library, educational programming, and more.

If you still have questions after viewing these pages, please contact the Marathon County Conservation, Planning, & Zoning (CPZ) Department at 715-261-6000 or

¿Habla Español? Translate this site, or view the Initial Announcement Postcard in Spanish.

Hais lus Hmoob? Translate this site, or view the Initial Announcement Postcard in Hmong.