County Assessor

County Assessor


The Assessor's Office is responsible for the valuation of all the tangible real and personal property within Osage County.

The Osage County Assessor's office strives to assess all property fairly, equally and in a uniform manner under the laws of the State of Missouri, while providing the highest level of service and treating all taxpayers and citizens with utmost respect.

List of Important Dates

January 1


Assessment Date

March 1


Personal Property Assessment List Return Deadline

June 15


Notice of Increase Value Change Mailed

July 1


Assessment Totals Turned Over to County Clerk

2nd Monday in July


Appointment to Board of Equalization Due

3rd Monday in July


Board of Equalization Hearings Begin

September 1


Tax Districts to Set Tax Levies with State Auditor’s Office

September 30


Deadline for Filing Appeals with State Tax Commission


P.O. BOX 409
LINN, MO 65051 

(573) 897-2217 – Phone

Assessor –  Tina Kammerich - 135

Deputy Assessor -  Cory Dudenhoeffer – ext. 133

Senior Clerk -  Mary Dudenhoeffer – ext. 132

Clerk -  Ashley Starke - ext. 131

Fieldworker -  Ethan Brueggemann 

Hours: Monday-Friday 8:00 a.m. to 4:30 p.m.
(Closed Holidays)


Assessment Tax Liability Dates for 3rd Class County


Missouri State Assessor’s Association (MSAA)
Missouri State Tax Commission (STC)

© 2017 Osage County,MO 205 E. Main Street, Linn, MO 65051

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