Branch Network
Security Bank Locations & Branches Newbern, Tennessee
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Security Bank operates 6 branches from its headquarters in Newbern, TN, .
Security Bank branch network
All 6 branches are in TENNESSEE, across 4 cities. Dyersburg, TN has the most of its branches, 3. Its largest office by deposits is the Mill Avenue Branch office in Dyersburg, TN, with $94.7M (49.4% of its branch deposits). On June 30, 2025 it had 7 branches, 1 more than in 2026.
Security Bank at a glance
Its CET1 capital ratio was 14.22% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $224.1M
- CET1 ratio, Q2 2026
- 14.22%
- Deposit insurance
- FDIC
- Regulator
- Federal Reserve
- Established
- 1931
Full financial profile · Is 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: Newbern, TN (1 branch) | 2 of 2 | 35.8% | $37.1M |
| State: TN (6 branches) | 116 of 165 | <0.1% | $191.8M |
Ranked by total assets among banks headquartered in the state: Largest banks in Tennessee.
Share by county and metro area
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 |
|---|---|---|---|---|
| Dyer, TN (5 branches) | 2 of 5 | 16.3% | $163.8M | $1.01B |
| Gibson, TN (1 branch) | 8 of 8 | 2.5% | $28.0M | $1.13B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Dyersburg, TN (5 branches) | 2 of 5 | 16.3% | $163.8M | $1.01B |
| Jackson, TN (1 branch) | 17 of 23 | 0.7% | $28.0M | $4.28B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Mill Avenue Branch | Dyersburg, TN | 38024 | $94.7M |
| Security Bank (main office) | Newbern, TN | 38059 | $37.1M |
| Trenton Branch | Trenton, TN | 38382 | $28.0M |
| Mall Boulevard Branch | Dyersburg, TN | 38024 | $18.6M |
| Trimble Branch | Trimble, TN | 38259 | $9.1M |
| Plaza Branch | Dyersburg, TN | 38024 | $4.4M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 2391) · FFIEC NIC profile (RSSD 497851)