Franklin County Assessor's Office - Missouri

Franklin County Assessor's Office - Missouri The Franklin County Assessor’s Office valuates all real and personal property in Franklin County, Missouri. This page is for informational purposes only.

06/25/2026

06/25/2026

The Franklin County Assessor’s Office is hiring a Part‑Time Commercial/Industrial Appraiser at $22/hr with potential for full‑time. Experienced candidates in appraisal or real estate are encouraged to apply.

06/18/2026

The Franklin County Assessor's Office will be closed on Friday, June 19, 2026, in observance of Juneteenth.

06/18/2026

The Franklin County Assessor's Office has Field Appraisers conducting parcel reviews in New Haven, Pacific, Sullivan, Washington, and the Catawissa area. If you have questions, please contact the office at 636-583-6348.

05/04/2026

The Franklin County Assessor's Office will be closed, Friday, May 08, 2026, in observance of Truman Day.

04/27/2026

04/27/2026: The Franklin County Assessor's Office will be closing at 3:30 p.m. today due to forecasted inclement weather.

03/19/2026

March 19, 2026

Field appraisers are currently doing data review in lake developments throughout Franklin County.

PERSONAL PROPERTY DECLARATION2026 Personal Property assessment forms & postcards to claim your Personal Property have be...
02/03/2026

PERSONAL PROPERTY DECLARATION

2026 Personal Property assessment forms & postcards to claim your Personal Property have been mailed.​

You may file your assessment online (need account # & pin #) or mail in the paper assessment form.​​

E-FILE IS OPEN FROM JANUARY 1 THROUGH OCTOBER 31​

If you own a Business and are not receiving an Assessment Form, please contact the office so we can get an account started and answer any questions about the equipment and items that are to be reported.

These are due by March 1st to avoid a penalty.

Notices received after March 1st are subject to penalties set forth by MO State Statute 137.280.​

IMPORTANT: If you have not received an assessment form and owned any personal property as of January 1st, please notify our office.

The Franklin County Assessor may provide personal property information to the public "as-is" without warranty of any kind, expressed or implied. In no event will the Franklin County Assessor be liable to anyone for damages arising from the use of the property data. You assume responsibility for the....

01/23/2026

The Franklin County Assessor's Office is closing at 3:30 p.m. on Friday, January 23, 2026.

01/15/2026

The Franklin County Assessor's Office will be closed Monday, January 19, 2026, in observance of Martin Luther King Jr. Day.

01/02/2026

Address

400 East Locust Street, Room 105
Union, MO
63084

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

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