2026 Property Tax Due Dates
December 31
Full payment
Payment Methods
Online, Mail, In-Person
St. Louis County Treasurer
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to St. Louis County Treasurer
In Person
Visit the Treasurer's office — 41 S Central Ave, Clayton MO 63105, Mon-Fri 8am - 5pm
Other Counties in Missouri
About St. Louis County
St. Louis County is located in eastern Missouri. It is bounded by the City of St. Louis and the Mississippi River to the east, the Missouri River to the north, and the Meramec River to the south. As of the 2020 census, the population was 1,004,125, making it the most populous county in Missouri, and was estimated to be 987,059 in 2023.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 14 days before your property taxes are due.
Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.