CREDIT UNION ONE
Routing Number: 271188081
SUITE 250
LOMBARD, IL 60148-0000
(630) 678-4325
28845 Woodward Avenue
Berkley, MI 48072
One Campus Martius, Suite 3C-4634
Detroit, MI 48226
Detroit Receiving Hospital
4201 St. Antoine
Detroit, MI 48201
5601 Eldred
Detroit, MI 48209
31716 Grand River Avenue
Farmington, MI 48336
400 E. Nine Mile Road
Ferndale, MI 48220
1609 Walker Ave, NW
Grand Rapids, MI 495042617
16255 Hall Road
Macomb Township, MI 48044
102 Oakland Center
Rochester, MI 48309
3601 W. 13 Mile Road, 3535 Medical Office Bldg., Suite 104
Royal Oak, MI 48073
24150 Little Mack
Saint Clair Shores, MI 48080
51111 Van Dyke
Shelby Township, MI 48316
9000 Fifteen Mile Road
Sterling Heights, MI 48312
1202 Veterans Drive
Traverse City, MI 49684
6010 Rochester Road
Troy, MI 48098
3805 Highland Road
Waterford, MI 48328
6515 W Maple Rd
West Bloomfield, MI 48322
29450 W. Warren
Westland, MI 48185
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frequently asked questions (FAQs) about Bank ABA routing numbers and their purposes:
Frequently asked questions (FAQs) about international bank routing codes

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The ABA number for American Savings Bank is 242272625. For customers making wire transfers, our routing information is as follows: Great Lakes Bankers Bank ABA 044002051 Credit Account #1002588 Please call for further details.
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