The Mill Creek Chamber of Commerce promotes, supports, and connects people and businesses to create growth, prosperity, and a vibrant community. The Mill Creek Mill Creek Chamber of Commerce is proud of their role in supporting the community of Mill Creek. The Chamber provides an opportunity for local businesses to connect with city officials, local leaders and the larger community. We invite you to join our outstanding business community and see how the Chamber can grow your business and build our community. The Chamber hosts the annual Mill Creek Festival, sponsors events such as the Summer Concert Series and Trunk or Treat and the Christmas Tree Lighting. In addition the Chamber awarded $8,000 in scholarships to local students and supports other scholastic efforts.