Branch Network
The Cornerstone Bank Locations & Branches South West City, Missouri
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The Cornerstone Bank operates 5 branches from its headquarters in South West City, MO, .
The Cornerstone Bank branch network
All 5 branches are in MISSOURI, across 5 cities. Its largest office by deposits is the The Corner Stone Bank office in South West City, MO, with $125.0M (68.2% of its branch deposits). It had the same number of branches on June 30, 2025.
The Cornerstone Bank at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 12.18% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $211.4M
- Tier 1 leverage ratio, Q2 2026
- 12.18%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1898
Full financial profile · Is The Cornerstone Bank safe? · The Cornerstone 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: South West City, MO (1 branch) | 1 of 1 | 100.0% | $125.0M |
| State: MO (5 branches) | 148 of 249 | <0.1% | $183.4M |
Ranked by total assets among banks headquartered in the state: Largest banks in Missouri.
Share by county and metro area
The Cornerstone 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 |
|---|---|---|---|---|
| Mcdonald, MO (5 branches) | 1 of 4 | 56.0% | $183.4M | $327.3M |
Metro area share: not on file. None of this bank's branches sit in a metropolitan or micropolitan area in the FDIC branch directory.
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| The Corner Stone Bank | South West City, MO | 64863 | $125.0M |
| The Corner Stone Bank | Goodman, MO | 64843 | $31.5M |
| Pineville Branch | Pineville, MO | 64856 | $23.9M |
| Lanagan Branch | Lanagan, MO | 64847 | $3.0M |
| NW Corner Branch | Tiff City, MO | 64868 | $8K |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 9388) · FFIEC NIC profile (RSSD 312356)