Membership with the Tri-City Regional Chamber of Commerce is one of the most important decisions you will make to ensure the success of your business. Whether you are a small business owner, or an employee of a large national firm, we have innovative programs and events that can help improve your bottom line. We offer targeted benefits, valuable resources, increased visibility, and unparalleled support to our members. With nearly 1200 member businesses, the Tri-City Regional Chamber of Commerce is the 5th largest Chamber in Washington State. We invite you to join one of the fastest growing Chambers in our region.