Branch Network
The First Security Bank Locations & Branches Beaver, Oklahoma
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The First Security Bank operates 3 branches from its headquarters in Beaver, OK, .
The First Security Bank branch network
Its 3 branches span 2 states and 3 cities. The most are in TEXAS (2) and OKLAHOMA (1). OKLAHOMA holds 53.4% of its branch deposits. Its largest office by deposits is the The First Security Bank office in Beaver, OK, with $148.1M (53.4% of its branch deposits). It had the same number of branches on June 30, 2025.
The First Security Bank at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 8.29% at Q2 2026, not above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $335.0M
- Tier 1 leverage ratio, Q2 2026
- 8.29%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1916
Full financial profile · Is The First Security Bank safe? · The First Security Bank call report · 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: Beaver, OK (1 branch) | 1 of 2 | 60.1% | $148.1M |
| State: OK (1 branch) | 122 of 192 | <0.1% | $148.1M |
Ranked by total assets among banks headquartered in the state: Largest banks in Oklahoma.
Share by county and metro area
The 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 |
|---|---|---|---|---|
| Beaver, OK (1 branch) | 1 of 2 | 60.1% | $148.1M | $246.4M |
| Jefferson, TX (1 branch) | 11 of 18 | 1.6% | $99.3M | $6.03B |
| Hardin, TX (1 branch) | 6 of 7 | 6.3% | $29.9M | $471.1M |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Beaumont-Port Arthur, TX (2 branches) | 12 of 20 | 1.7% | $129.2M | $7.70B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| The First Security Bank | Beaver, OK | 73932 | $148.1M |
| The First Security Bank Beaumont Branch | Beaumont, TX | 77706 | $99.3M |
| Sour Lake Branch | Sour Lake, TX | 77659 | $29.9M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 4041) · FFIEC NIC profile (RSSD 49951)