St. Louis County, MissouriProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Tax bill mailing
- November 2026; the official Collector prepayment form states the finalized tax bill will be mailed in November.
- Payment deadline
- December 31, 2026 statutory deadline; official prepayment dates are March 31, June 30, August 31, and December 31.
- Assessment appeal
- July 13, 2026; St. Louis County assessment appeals and supporting evidence are due by the second Monday in July.
Exemptions & appeals
Senior relief
St. Louis County Senior Property Tax Freeze: official eligibility requires age 62+, ownership or legal/equitable interest, and primary residence occupancy; the 2026 application/renewal deadline was not published on the official pages reviewed. The program freezes eligible future tax increases, not assessed value, and excludes specified portions such as bonded debt and the State Blind Pension Fund.
Valuation limits
No general local annual valuation cap was verified. Missouri real property is generally reassessed in odd-numbered years, with statutory assessment ratios of 19% residential, 12% agricultural, and 32% commercial; any local senior credit limits tax liability rather than market or assessed value.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →