Washington County Property Search (Oklahoma)

The Washington County Assessor is responsible for determining the value of property in order to determine Washington County property taxes. The Washington County Assessment Office collect data from on-site inspections, value assessments for construction or improvements, comparable sales, and calculations of depreciation. The Washington County Tax Assessor maintains current data on every parcel in the Washington County, which includes ownership information, maps of property lines, inventories of parcels and structures, and the value of all the property in the Washington County, OK. The Washington County Assessor’s Office can answer questions regarding Washington County property tax appeals and assessments, Washington County property tax rates and payment due dates.

Washington County Assessor's Office Bartlesville OK 400 South Johnstone Avenue 74003 918-337-2830


The Washington County Clerk files important documents and preserves municipal records in order to maintain an archive of Washington County property records that can be accessed by the public. The Clerk's Office is a valuable source of information on property in Washington County, Oklahoma. The Washington County Clerk's Office contains documentation on real estate excise taxes, registered land, and property transactions, as well as land documents including Washington County deeds, mortgages, and liens on properties.

Copan City Clerk Copan OK 112 North Caney Street 74022 918-532-4285

Washington County Clerk Bartlesville OK 420 South Johnstone Avenue 74003 918-337-2870

The Washington County Recorders of Deeds maintain public records, particularly documents related to property and land records, and make them available for public access in Washington County, OK. The Office of Recorder of Deeds in Washington County is a valuable source of information on property records The Recorder of Deeds maintains documents on land transactions within its jurisdictions, including Washington County deeds and titles, mortgages, property ownership records, surveys, and easements, as well as tax liens.

Washington County Recorder of Deeds Bartlesville OK 400 South Johnstone Avenue 74003 918-337-2840


Washington County Town Halls and City Hall are the chief administrative offices that runs the town or city. The Town Hall or City Hall often maintains records related to the locality, including Washington County property taxes, property value assessments, and land transactions, as well as property sales and transfers in Washington County, Oklahoma.

Copan City Hall Copan OK 112 North Caney Street 74022 918-532-4114

Dewey City Hall Dewey OK 411 East Don Tyler Avenue 74029 918-534-2272

Ramona City Hall Ramona OK 420 2ND St 74061 918-536-2245


The Washington County Treasurer and Tax Collector’s Office is responsible for the collection of Washington County property tax revenue. The Treasurer and Tax Collector maintains current Washington County property tax information including Washington County property ownership information, GIS Maps, tax maps, historical property tax rates, lists of sold parcels, and is also charged with the sale of properties due to a default on taxes in Washington County, Oklahoma.

Washington County Treasurer's Office Bartlesville OK 420 South Johnstone Avenue 74003 918-337-2810