Metropolitan Milwaukee Association of Commerce (MMAC) Non-Profit Organizations Metropolitan Milwaukee Association of Commerce (MMAC) Visit Website Request Info 275 W Wisconsin Ave Suite 220 Milwaukee, WI 53203-3304 (414) 287-4114 About Map About Our mission is to improve Metro Milwaukee as a place to invest capital, grow business and create jobs. We represent 1,800 member businesses with 300,000 employees in Southeastern, WI and beyond. What's Nearby? Distance: 5 10 15 20 25 50 mi.