Tri-County Chamber of Commerce Categories Chamber of Commerce 355 West 6th Avenue Junction City OR 97448 (541) 998-6154 Send Email Visit Website Rep/Contact Info View Personal Bio Rhonda Giles × Chamber of Commerce for Junction City, Harrisburg, and Monroe and the rural areas in between. Rhonda Giles Executive Director Phone: (541) 998-6154 Send an Email Share × Print Email Facebook Twitter LinkedIn Tell a Friend ×