Washington

Wildlife Violator Compact (Joined 1993)
Western Regional Education Compact (Joined 1955)
Western Interstate Nuclear Compact (Joined 1977)
Western Interstate Corrections Compact (Joined 1959)
Uniform Unclaimed Property Act (Joined 1997)
Streamlined Sales Tax Agreement (Joined 2008)
State Authorization Reciprocity Agreement (Joined 2014)
Social Work Compact (Joined 2024)
Respiratory Care Interstate Compact (Joined 2025)
Psychology Interjurisdictional Compact (Joined 2022)
Physical Therapy Licensure Compact (Joined 2017)
Pacific Northwest Emergency Management Arrangement
Pacific States Marine Fisheries Compact (Joined 1947)
PA Licensure Compact (Joined 2024)
Pacific Northwest Economic Region (Joined 1991)
Oregon-Washington Columbia River Boundary Compact (Joined 1957)
Occupational Therapy Licensure Compact (Joined 2022)
Nurse Licensure Compact (Joined 2023)
Northwest Wildland Fire Protection Agreement (Joined 1998)
Northwest Interstate Compact on Low-Level Radioactive Waste Management (Joined 1989)
Northwest Power and Conservation Council (Joined 1981)
Nonresident Violator Compact (Joined 1993)
National Popular Vote Interstate Compact (Joined 2009)
National Guard Mutual Assistance Counter-Drug Activities Compact (Joined 1993)
Multistate Tax Compact (Joined 1967)
Multistate Highway Transportation Agreement (Joined 1983)
Interstate Teacher Mobility Compact (Joined 2024)
Interstate Medical Licensure Compact (Joined 2017)
Interstate Library Compact (Joined 1965)
Interstate Insurance Product Regulation Compact (Joined 2005)
Interstate Forest Fire Suppression Compact (Joined 1991)
Interstate Corrections Compact (Joined 1983)
Interstate Compact on the Placement of Children (Joined 1971)
Interstate Compact on Licensure of Participants in Horse Racing with Pari-Mutuel Wagering (Joined 2001)
Interstate Compact on Educational Opportunity for Military Children (Joined 2009)
Interstate Compact on Adoption and Medical Assistance (Joined 1997)
Interstate Compact for Juveniles (Joined 1955)
Interstate Compact for Adult Offender Supervision (Joined 2001)
Interstate Agreement on Qualifications of Educational Personnel (Joined 1969)
Interstate Agreement on Detainers (Joined 1967)
Emergency Management Assistance Compact (Joined 2001)
Driver License Compact (Joined 1963)
Dentist and Dental Hygienist Compact (Joined 2023)
Counseling Compact (Joined 2023)
Cosmetology Compact (Joined 2025)
Compact on Mental Health (Joined 1965)
Columbia River Compact (Joined 1915)
Columbia River Gorge Compact (Joined 1987)
Boating Offense Compact (Joined 1992)
Audiology and Speech Language Pathology Interstate Compact (Joined 2023)