Forms and Publications

Property Forms and Publications generated prior to April 24, 2026, have been archived to meet the federally mandated WCAG (Web Content Accessibility Guidelines) Title II – AA rules and regulations which will take effect on April 24, 2026. 

Please navigate to the page, "Archived Assessment Data prior to April 24, 2026" to locate archived data. 


The most commonly used forms and publications are available below in the appropriate category.  Most of the forms we use are published by the Oregon Department of Revenue, and the links below will retrieve the latest version of the form from their website.  If a link is broken, please email assessor@columbiacountyor.gov, and we will update the link as soon as possible.  If you need the form immediately or if you are unable to locate the form you need, please visit https://www.oregon.gov/dor/forms/Pages/default.aspx and search for the desired form.

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Business Personal Property
Exemptions
Deferral and Special Assessment Programs

Farm Use Special Assessment

Forestland Special Assessment

Tax Deferral for Disabled and Senior Citizens

Other Forms

Manufactured Structure Ownership/Situs Changes
Property Record Changes
Property Tax Appeals and Reviews

Property Records Online

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**Beginning April 22, 2026, Columbia County Webmaps will be undergoing upgrades to meet the Department of Justice's Title II ADA WCAG requirements and will be offline until further notice.**

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General Information
Phone Numbers
503-397-2240
Fax: 503-397-5153
Emergencies: Dial 911
Location
230 Strand St.
Columbia County Courthouse Annex
St. Helens,
OR
97051

Monday - Friday
8:30 a.m. to 5:00 p.m.