Headquarters

2955 University Drive

Auburn Hills, MI 48326

Phone: (248) 340-9310

Member Call Center

(800) 777-6728

Locations & Hours

We are in your corner in communities throughout southeast Michigan and in Perrysburg, Ohio. Find the branch nearest to you and make Cornerstone your community financial center!

Visit www.allco-op.org to find shared branching and a free ATM locator.

  • HeadquartersAuburn Hills, MI

    Has ATM

    Phone
    (248) 340-9310
    Fax
    (248) 340-0890
    Address:
    2955 University Drive
    Auburn Hills, MI 48326
    Hours:
    Mon - Fri9:00am – 5:00pm
    Sat9:00am – 1:00pm
    Drive Up:
    Fri9:00am – 6:00pm
  • Troy BranchTroy, MI

    Has ATM

    Phone
    (248) 528-1885
    Fax
    (248) 528-2870
    Address:
    1785 Rochester Road
    Troy, MI 48083
    Hours:
    Mon - Fri9:00am – 5:00pm
    Drive Up:
    Fri9:00am – 6:00pm
  • Somerset Troy BranchTroy, MI

    Has ATM

    Phone
    800-777-6728
    Fax
    248-373-1325
    Address:
    3001 W. Big Beaver Suite 108
    Troy, MI 48084
    Hours:
    Mon - Fri9:00am – 5:00pm
    Sat9:00am – 1:00pm
    Drive Up:
    Fri9:00am – 6:00pm
  • Center Line BranchCenter Line, MI

    Phone
    (586) 754-2300
    Fax
    (586) 754-0110
    Address:
    7291 Bernice
    Center Line, MI 48015
    Hours:
    Mon - Fri9:00am – 5:00pm
    Sat9:00am – 1:00pm
    Drive Up:
    N/A
  • Perrysburg BranchPerrysburg, OH

    Has ATM

    Phone
    (419) 666-1800
    Fax
    (419) 666-5932
    Address:
    28310 Oregon Road
    Perrysburg, OH 43551
    Hours:
    Mon - Fri9:00am – 5:00pm
    Sat9:00am – 12:00pm
    Drive Up:
    N/A