Routing Number | Bank Name | Bank Address | Phone Number | Change Date |
| 091101730 | 1ST NAT BK & TR CO OF IRON MOUNTAIN | PO BOX 370, IRON MOUNTAIN, MI 49801-0000 | (906) 774-2200 | 2002-03-01 |
| 072414158 | 1ST STATE BANK | 4805 TOWNE CENTRE #100, SAGINAW, MI 48604-0000 | (989) 799-7500 | 2008-01-25 |
| 272481389 | AAC CREDIT UNION | 904 BROADWAY NW, GRAND RAPIDS, MI 49504-0000 | (616) 459-4429 | 2007-08-01 |
| 272480393 | AAC CREDIT UNION | 904 BROADWAY NW, GRAND RAPIDS, MI 49504-0000 | (616) 459-4429 | 1995-01-23 |
| 272078103 | ABD FEDERAL CREDIT UNION | 27850 MOUND ROAD, WARREN, MI 48092-2696 | (586) 751-4400 | 2005-03-29 |
| 272485673 | ABD FEDERAL CREDIT UNION | 27850 MOUND ROAD, WARREN, MI 48092-2696 | (586) 751-4400 | 2001-10-11 |
| 272481787 | ACCESS FIRST FEDERAL CREDIT UNION | 52800 N. MAIN, MATTAWAN, MI 49071-8309 | (269) 668-6336 | 2007-02-28 |
| 272485107 | ADVANTAGE ONE FCU | 23670 TELEGRAPH RD, BROWNSTOWN, MI 48134-0000 | (734) 676-7000 | 2003-09-22 |
| 272481512 | AEROQUIP CREDIT UNION | 901 PLYMOUTH, JACKSON, MI 49201-0000 | (517) 789-2890 | 2008-03-10 |
272078886 272483840 | AFFINITY GROUP CREDIT UNION | 144 E PIKE ST, PONTIAC, MI 48342-0000 | (248) 334-0568 | 2007-10-18 |