Security Trust & Savings Bank Routing Number

What is an ABA routing number?

An ABA routing number, also called a routing transit number (RTN), is a 9-digit code that identifies a U.S. financial institution in the payment system. It tells ACH transfers, Fedwire payments, and paper checks which bank to route money to. The format was created by the American Bankers Association in 1910 and is still the backbone of U.S. domestic payments.

What is the difference between a routing number and an account number?

Your routing number identifies the bank; your account number identifies your specific account at that bank. On a paper check, the routing number is the 9-digit number in the bottom-left, and the account number is to its right.

What is the Security Trust & Savings Bank routing number?

The Security Trust & Savings Bank routing number is 073903529. It is the primary ABA routing transit number registered to Security Trust & Savings Bank, headquartered in Storm Lake, IA. A bank can hold more than one routing number, so this is the one on record for the institution, not necessarily the one printed on every check. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 8, 2026.

What is the Security Trust & Savings Bank wire routing number?

This page lists 073903529, the primary routing number registered to Security Trust & Savings Bank. The record does not say whether the bank uses the same number for wire transfers, and many banks use a separate routing number for domestic wires. Confirm the wire routing number with Security Trust & Savings Bank before sending a wire.

Is ABA number 073903529 the routing number for Security Trust & Savings Bank?

Yes. ABA number 073903529 is the primary routing number registered to Security Trust & Savings Bank. Check it against the routing number on a check or in your online banking before sending an ACH payment, because a bank can use different numbers by region or product.

Which bank uses routing number 073903529?

Routing number 073903529 belongs to Security Trust & Savings Bank, headquartered in Storm Lake, IA. It is the bank's primary ABA routing number (FDIC certificate 968).

Routing numbers of similar-size institutions in Iowa

Bank, Storm Lake, IA

Central Bank: 073903503

Bank, Storm Lake, IA

Citizens First National Bank: 073903516

Bank, Westside, IA

Westside State Bank: 073913580

Bank, West Des Moines, IA

Freedom Financial Bank: 073922704

Bank, Mediapolis, IA

Mediapolis Savings Bank: 073921873

Bank, Cherokee, IA

Cherokee State Bank: 073901974

Bank, Winterset, IA

Farmers & Merchants State Bank: 073903147

Bank, Fontanelle, IA

FNB Bank: 073907509

All routing numbers in Iowa