Assessors--osage County 600 Grandview Ave # 101 Pawhuska, OK 74056 Phone : (918) 287-3448 Business Category Government Offices-County Social Service & Welfare Organizations Community Services Public Finance Taxation & Monetary Policy Government Offices & Public Schools Osage County Of--county Assessor Court House Pawhuska, OK 74056 Phone : (918) 287-3448 Business Category Government Offices-County Government Offices & Public Schools