FDIC-insured bank
First Security Bank
Bank headquartered in Union Star, Missouri, part of FIRST AMERICAN BANCSHARES INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 108 N 4th St Union Star, MO 64494 |
| County | Dekalb |
| Metro area | St. Joseph, MO-KS |
| Website | WWW.FIRSTSECURITYBANKMO.COM |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 1622 |
| Federal Reserve RSSD ID | 322551 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | FIRST AMERICAN BANCSHARES INC |
| Domestic offices | 2 |
| 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.FIRSTSECURITYBANKMO.COM.
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Offices nearest to headquarters
| First Security Bank main office Union Star, MO |
108 N 4th St, 64494 |
| Trimble Branch Trimble, MO |
202 North Highway 169, 64492 |