Bank routing number ยท Algona, Iowa
Security State Bank Routing Number (ABA): 073921187
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The Security State Bank routing number is 073921187. It is the primary ABA routing transit number on the bank's FFIEC National Information Center record, refreshed here on October 25, 2026.
Security State Bank at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 27.26% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $109.8M
- Tier 1 leverage ratio, Q2 2026
- 27.26%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Domestic offices
- 4 FDIC institution directory, current count
- Established
- 1931
Full financial profile · Is Security State Bank safe? · Branch locations
Security State Bank routing numbers on file
| Routing number | Type | Status | Source |
|---|---|---|---|
| 073921187 | Primary ABA | Active | FFIEC NIC |
Record refreshed here on October 25, 2026. NIC holds one primary number per bank; Security State Bank publishes any other numbers it uses itself.
What the digits mean
The first two digits, 07, place this number in the Federal Reserve Bank of Chicago's district (District 7). Digits five through eight, 2118, identify the institution within that district. The last digit, 7, is a check digit, and the number passes the standard check: weight the nine digits 3, 7, 1, 3, 7, 1, 3, 7, 1 and the sum is a multiple of 10.
Before you send money to Security State Bank
A routing number tells the payment network which financial institution holds an account. You give it with an account number for ACH transfers through the automated clearing house, such as direct deposit, bill pay and transfers from a checking account, which usually settle in one to two business days. An international wire to a US account normally needs the bank's SWIFT code as well.
Match this number against the one on your Security State Bank checks or in its online banking. Ask the bank for wire instructions (bankssb.com). Our record does not show whether this number receives wires. The Federal Reserve's E-Payments Routing Directory shows it: its Fedwire participant search lists the numbers that can receive Fedwire transfers, and its FedACH search lists those that receive ACH payments. How to confirm any routing number.
About Security State Bank
Security State Bank is headquartered in Algona, Iowa and was established in 1931. It reported $109.8M in total assets and $79.7M in deposits for Q2 2026, the 188th largest of the 225 banks headquartered in Iowa. See the largest banks in Iowa by total assets. It reports 4 domestic offices. Its deposits have been FDIC insured since 1941. Its primary federal regulator is the FDIC. 2 other banks and credit unions headquartered in Algona have a routing number listed here.
What the digits in 073921187 mean
The first four digits, 0739, are the Federal Reserve routing symbol. The prefix 07 places the number in the 7th Federal Reserve District (Chicago). That is also the district where the bank is headquartered. Digits five through eight, 2118, identify the institution within its Federal Reserve district. The last digit, 7, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 10 + 7 x 17 + 11 = 160, a multiple of 10, so 073921187 is a well-formed routing number. A mistyped digit almost always breaks that sum.
What is the Security State Bank routing number?
The Security State Bank routing number is 073921187. It is the primary ABA routing transit number registered to Security State Bank, headquartered in Algona, IA. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 25, 2026.
What is the Security State Bank wire routing number?
This page lists the primary routing number registered to Security State Bank. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with Security State Bank before sending a wire.
Is ABA number 073921187 the routing number for Security State Bank?
Yes. It is the primary routing number registered to Security State Bank.
Which bank uses routing number 073921187?
It belongs to Security State Bank, headquartered in Algona, IA. It is the bank's primary ABA routing number (FDIC certificate 15839).
Routing numbers of similar-size institutions in Iowa
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- Maynard Savings Bank: 073914550
- Credit union, Newton, IA
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- Breda Savings Bank: 073912196
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View Security State Bank's full profile →
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Regulator records: FDIC BankFind (cert 15839) · FFIEC NIC profile (RSSD 750846)