About Mainstreet
History
Mainstreet Organization of REALTORS® has a long history of serving REALTORS® and the communities our members reside, work and volunteer in. What began in 1921 as the then DuPage Association of REALTORS®, the organization grew and merged many times to become Mainstreet Organization of REALTORS® in 2007.
Today, with more than 20,000 members, Mainstreet and our members cover more than 200 municipalities in DuPage County, Lake County and Western and Southern Suburban Cook County.
Downers Grove
Headquarters :: 6655 Main Street, Downers Grove, IL 60516
Rolling Meadows
3701 Algonquin Road, Ste. 650, Rolling Meadows, IL 60008
Libertyville
1580 S. Milwaukee Avenue, Suite 312, Libertyville, IL 60048
Tinley Park
16345 S. Harlem Avenue, Suite 200, Tinley Park, IL 60477