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Tammy Groom Ketterman

Republican · Washington · 2026

Running for Columbia County Assessor, Washington

Biography

Ketterman has served as Columbia County Assessor from 2023 to the present and was Chief Deputy Appraiser in the Assessor's Office from 2016 to 2022, per the statement filed for the Washington voters' guide. Ketterman was a residential and farm appraiser for the Walla Walla County Assessor from 1992 to 2000 and holds a Washington Department of Revenue Certificate of Accreditation, per the statement filed for the Washington voters' guide.

On the ballot

Columbia County AssessorWashington · 2026Columbia County sample ballot

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How we source this

Profile facts follow official election office filings and the sources cited in each biography. Roster last verified October 26, 2026. Official sources are the final word on who appears on your ballot.

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