FDIC-insured bank
First Security Bank
Bank headquartered in Byron, Minnesota, part of OLMSTED BCORP INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 316 Byron Ave N Byron, MN 55920 |
| County | Olmsted |
| Metro area | Rochester, MN |
| Website | WWW.fsbbyron.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 9728 |
| Federal Reserve RSSD ID | 109154 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | OLMSTED BCORP INC |
| Domestic offices | 1 |
| Financials as of | June 30, 2026 |
Routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at WWW.fsbbyron.com.
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Offices nearest to headquarters
| First Security Bank main office Byron, MN |
316 Byron Ave N, 55920 |