Allen Park Chamber of Commerce; 6543 Allen Road, Allen Park 48101; 1-313-382-7303; Gerri Stewart-Conway, executive director. www.allenparkchamber.org

American Arab Chamber of Commerce; 12740 W. Warren Ave., Suite 300, Dearborn 48126; 1-313-945-1700; Fay Beydoun, executive director. www.americanarab.com

Dearborn Chamber of Commerce; 22100 Michigan Ave., Dearborn 48124; 1-313-584-6100; Jennifer Giering, president. www.dearbornchamber.org

Dearborn Heights Chamber of Commerce; 24951 W. Warren Ave., Dearborn Heights 48127; 1-313-274-7480; Wendy Fichter, executive director. www.dearbornheightschamber.com

Greater Romulus Chamber of Commerce; 11189 Shook Road, Romulus 48174; 1-734-893-0694; Karen La Belle, executive director. www.romuluschamber.org

Huron Township Chamber of Commerce; 37236 Huron River Drive, New Boston 48164; 1-734-753-4220. www.members.tripod.com/htcc48164

Lincoln Park Chamber of Commerce; 1335 Southfield Road, Lincoln Park 48146; 1-313-386-0140; Karen Maniaci, executive director. www.lpchamber.org

Southern Wayne County Regional Chamber; 20904 North Line Road, Taylor 48180; 1-734-284-6000; Sandy Mull, president. www.swcrc.com

The chamber serves 21 communities, including all 18 Downriver.

MERCHANT/BUSINESS ASSOCIATIONS

Dearborn Area Board of Realtors; 2350 Monroe, Dearborn 48124; 1-313-278-2220; Laura Green, chief executive officer. www.dabor.com

Down River Association of Realtors; 2674 W. Jefferson Ave., Suite 101, Trenton 48183; 1-734-287-8060; Elaine Adkins, chief executive officer. www.drar.com

Downriver and Detroit Business Association; 2011 Oak St., Wyandotte 48192; 1-313-595-2624; Laura Wyatt, director. www.dadbanetwork.com

Opportunity Grosse Ile Inc.; 7717 Macomb St., Grosse Ile 48138; 1-734-713-7905; Ron Baker, executive director. www.oppgrosseile.org

Opportunity Grosse Ile operates the Grosse Ile Welcome Home! Center, a collaboration of community, school and business members who promote Grosse Ile.

Trenton Business Association; P.O. Box 4, Trenton 48183; 1-734-676-9651, ext. 3; Krishelle Kohler Wiley, president. www.trentonbiz.com

Wyandotte Business Association; City Hall, 3131 Biddle Ave., Wyandotte 48192; 1-734-324-4514; Lynn Steffensky, executive director. www.wyandottebiz.org