Where is Washington DECA headquartered?

Washington DECA is headquartered in Tukwila, WA. This location serves as the central hub for DECA's activities within the state, providing resources and support for local chapters and members. Being situated in Tukwila allows for convenient access to various educational institutions, businesses, and other relevant organizations that are essential for the development of DECA programs and events.

The other locations mentioned may have significance within the state but do not serve as the official headquarters for Washington DECA. Seattle, for instance, is a major urban center known for its business and innovation but is not where DECA operations are centralized. Spokane, located in the eastern part of the state, offers a vibrant community but is not the administrative center. Olympia, as the state capital, plays a critical role in governance and legislation but is not the chosen location for DECA's state headquarters. Thus, Tukwila stands out as the correct answer, aligning with DECA's operational framework in Washington.