St. Louis

St. Charles County Residents Advised to Check Mail for Personal Property Assessment Notices Ahead of March 1 Deadline

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Published on January 05, 2026
St. Charles County Residents Advised to Check Mail for Personal Property Assessment Notices Ahead of March 1 DeadlineSource: Unsplash/ Anil Baki Durmus

St. Charles County residents are receiving their annual personal property assessment notices, the county reports. The notices list taxable items such as vehicles, boats, and farm equipment, and property owners must review and confirm their accuracy. Forms can be submitted online, by mail, or in person downtown, with a March 1 deadline for submissions.

The assessments, based on ownership as of last Thursday, determine the value of taxable property for the year. Local entities, such as school and fire districts, set the tax rates, not the Assessor’s Office. These values are combined and applied to the approved rates to calculate the tax bills that will be issued in October.

Failing to submit your assessment could result in a penalty and may affect vehicle registration or license plate renewal. The St. Charles Assessor’s Office provides full details on its website, and residents can call 636-949-7420 for assistance.

St. Charles County now offers a text alert service to notify residents of important dates, including elections, assessment deadlines, and property tax bill schedules. To sign up, text #RemindMe to 833-547-2005 and receive timely reminders to help stay informed and avoid penalties.