All banks
FDIC cert #29657bank

Great Midwest Bank, S.S.B.

Sourced from the Federal Reserve E-Payments Routing Directory. Confirm with your bank before initiating wires.

Headquarters
Brookfield, WI
Branch locations
9
Total assets
$1.03B

Great Midwest Bank, S.S.B. routing number

275971906

The ABA routing number for Great Midwest Bank, S.S.B. is 275971906. Use it for direct deposits, ACH transfers, and wires. Sourced from the Federal Reserve E-Payments Routing Directory — confirm with the bank before initiating wires.

Great Midwest Bank, S.S.B.'s best rates today

The strongest live rate we've scraped from Great Midwest Bank, S.S.B. in each product category. Tap a card to open an account on the bank's site.

Rates are scraped from public sources and may not reflect every promotion. Confirm the current rate on the bank's site before applying.

Great Midwest Bank, S.S.B. contact information

Headquarters address sourced from the FDIC. Phone number sourced from the Federal Reserve E-Payments Routing Directory. Always verify before sending payments.

Headquarters
15900 W Bluemound Rd
Brookfield, WI, 53005
Phone
(262) 784-4400
Website
www.greatmidwestbank.com

Great Midwest Bank, S.S.B. CD rates

Latest scraped APYs across 8 terms · as of 2026-06-01.

Great Midwest Bank, S.S.B. branches near you

Share your location to find the closest branches.

Branch coverage by state

WI9 branches