Become A Member Welcome to one of the largest business organizations in DuPage County. With over 700 Members, Chamber630 spans over 50 municipalities, 70 zip codes and 9 counties with a dedicated focus on the Villages of Downers Grove and Woodridge. Become A Member - Short Name* First Last Phone*Email* Business Name*Business Address Street Address Address Line 2 City State ZIP Code Website URL How did you hear about us?Tell us about your business