Assessor's Office Contact Information Washington County Courthouse Administration Building 400 SE Johnstone Ave. Room 300 Bartlesville, OK 74003    Phone Numbers:    Office: (918) 337-2830    Fax: (918) 337-2893   Email: assessor@countycourthouse.org   Washington County   Commissioners   Assessor      Market Value      Parcel Info      F.A.Q.      About Todd     Contact Info   County Clerk   Treasurer   Court Clerk   County Judges   District Attorney   Election Board   County Sheriff   Sex Offenders   Emergency Mgmt   Free Fair   Development
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