Branch Network
First Security Bank Locations & Branches Union Star, Missouri
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First Security Bank operates 2 branches from its headquarters in Union Star, MO, .
First Security Bank branch network
Both branches are in MISSOURI, across 2 cities. Its largest office by deposits is its main office in Union Star, MO, with $34.3M (60.2% of its branch deposits). It had the same number of branches on June 30, 2025.
First Security Bank at a glance
Its CET1 capital ratio was 13.95% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $61.9M
- CET1 ratio, Q2 2026
- 13.95%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Established
- 1890
Full financial profile · Is First Security Bank safe? · Routing number
Deposit market share
Share of all FDIC-insured deposits held in each area, from the June 30, 2026 Summary of Deposits. Rank 1 is the largest holder. Shares are by bank charter, not by holding company.
| Area | Rank | Deposit share | Deposits |
|---|---|---|---|
| City: Union Star, MO (1 branch) | 1 of 1 | 100.0% | $34.3M |
| State: MO (2 branches) | 224 of 249 | <0.1% | $56.9M |
Ranked by total assets among banks headquartered in the state: Largest banks in Missouri.
Share by county and metro area
First Security Bank's share of FDIC-insured deposits in the counties and metro areas where it has branches, from the June 30, 2026 Summary of Deposits. Up to the ten largest of each are shown, by the bank's deposits. Rank 1 is the largest holder. Banks only: credit unions are not in the Summary of Deposits.
Counties
| County | Rank | Deposit share | Deposits | County total |
|---|---|---|---|---|
| Dekalb, MO (1 branch) | 4 of 5 | 12.1% | $34.3M | $283.0M |
| Clinton, MO (1 branch) | 8 of 8 | 4.3% | $22.6M | $526.1M |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| St. Joseph, MO-KS (1 branch) | 18 of 21 | 1.1% | $34.3M | $3.22B |
| Kansas City, MO-KS (1 branch) | 103 of 114 | <0.1% | $22.6M | $98.85B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| First Security Bank (main office) | Union Star, MO | 64494 | $34.3M |
| Trimble Branch | Trimble, MO | 64492 | $22.6M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 1622) · FFIEC NIC profile (RSSD 322551)