First Security Bank Routing Number (ABA): 091906760

First Security Bank at a glance

Its CET1 capital ratio was 10.82% at Q2 2026, above regulatory requirements.

Total assets, Q2 2026

$161.7M

CET1 ratio, Q2 2026

10.82%

Deposit insurance

FDIC

Regulator

FDIC

Domestic offices

1 FDIC institution directory, current count

Established

1904

Full financial profile · Is First Security Bank safe? · Branch locations

What the digits mean

The first two digits, 09, place this number in the Federal Reserve Bank of Minneapolis's district (District 9). Digits five through eight, 0676, identify the institution within that district. The last digit, 0, 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 First Security 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 First Security Bank checks or in its online banking. Ask the bank for wire instructions (www.fsbbyron.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 First Security Bank

First Security Bank is headquartered in Byron, Minnesota and was established in 1904. It is in the ROCHESTER, MN metro area. It reported $161.7M in total assets and $121.6M in deposits for Q2 2026, the 128th largest of the 221 banks headquartered in Minnesota. See the largest banks in Minnesota by total assets. It reports 1 domestic office. Its deposits have been FDIC insured since 1934. Its primary federal regulator is the FDIC.

What the digits in 091906760 mean

The first four digits, 0919, are the Federal Reserve routing symbol. The prefix 09 places the number in the 9th Federal Reserve District (Minneapolis). That is also the district where the bank is headquartered. Digits five through eight, 0676, identify the institution within its Federal Reserve district. The last digit, 0, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 16 + 7 x 15 + 7 = 160, a multiple of 10, so 091906760 is a well-formed routing number. A mistyped digit almost always breaks that sum.

What is the First Security Bank routing number?

The First Security Bank routing number is 091906760. It is the primary ABA routing transit number registered to First Security Bank, headquartered in Byron, MN. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 25, 2026.

What is the First Security Bank wire routing number?

This page lists the primary routing number registered to First Security Bank. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with First Security Bank before sending a wire.

Is ABA number 091906760 the routing number for First Security Bank?

Yes. It is the primary routing number registered to First Security Bank.

Which bank uses routing number 091906760?

It belongs to First Security Bank, headquartered in Byron, MN. It is the bank's primary ABA routing number (FDIC certificate 9728).

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