FIRST BANK
Routing Number: 121137506
600 JAMES S MCDONNELL BLVD
HAZELWOOD, MO 63042-0000
(800) 760-2265
11 E Lockwood
Webster Groves, MO 63119
1526 West Highway 70 South Service Road
Wentzville, MO 63385
2462 Taylor Road
Wildwood, MO 63040
9801 Westheimer Road 10th Floor, Suite 1060
Houston, TX 77042
Why do banks use SWIFT/BIC codes?
Is it safe to share my SWIFT/BIC code with others?
Can I use someone else's SWIFT/BIC code for a transfer?
How do I find my bank's routing number?
Frequently asked questions (FAQs) related to bank routing numbers and bank routing information:
frequently asked questions (FAQs) about Bank ABA routing numbers and their purposes:
Frequently asked questions (FAQs) about international bank routing codes

It varies from bank to bank and country to country. You can call Prosperity at 800-531-1401 for more information.
Read More
Which routing number do I use to wire transfer to another country?
Read More
I am in Upstate NY. Am I supposed to use the routing number on my check or 021302567?
Read More