About Us


It's easy to open your Advantage One account!  Credit union membership is open to persons who work, worship, or attend school within the following Michigan counties: 

  • Clinton
  • Eaton
  • Genesee
  • Hillsdale
  • Ingham
  • Jackson
  • Lapeer
  • Lenawee
  • Livingston
  • Macomb
  • Monroe
  • Oakland
  • Shiawassee
  • St. Clair
  • Washtenaw
  • Wayne



Map showing counties in field of membership

Relatives of AOCU members are eligible to join if they are a spouse, domestic partner, child, sibling, parent, grandparent, or grandchild of a current member.  This includes stepchildren, stepparents, step siblings, and adopted children.

Open your account online or call us at 734-676-7000.

Go to main navigation