ACH Transfer
ACH (Automatic Clearing House)
Takes 1–3 business days through a central network.
Generally low-cost or free.
Ideal for routine, non-urgent transactions
COMERICA BANK CALIFORNIA Routing Number in MI is 121137522
| Routing Number | Bank | Address | City | State | Zip Code |
121137522 | COMERICA BANK CALIFORNIA | P.O. BOX 75000 | DETROIT | MI | 48275 |
| Routing Number | |
121137522 | |
| Bank | |
COMERICA BANK CALIFORNIA | |
| Address | |
P.O. BOX 75000 | |
| City | |
DETROIT | |
| State | Zip Code |
MI | 48275 |
ACH vs Wire Transfer
Transfer Support
ACH and wire transfers use different processing networks and may require different routing numbers.
Wire Transfer
Wire Transfers
Completed instantly or within a business day across banks.
Comes with fees ranging from $15 to $50.
Ideal for urgent or global transactions ACH can't handle.
Where to find your routing number
Check or statement
Your bank routing number can be found at the bottom left corner.
Online banking
You’ll be able to get your bank's routing number by logging into online banking.
On this website
We've listed routing numbers for some of the biggest banks in the US.
Fedwire
You can look up your routing number on the official website of the Federal Reserve.
FAQs
See answers to common questions we get about routing numbers.
No, securities-based portfolios do not have FDIC insurance.
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