Branch Network
Cornerstone Bank Locations & Branches Clarinda, Iowa
BankRegReports is independent of Cornerstone Bank and never asks for online banking logins or passwords.
Cornerstone Bank operates 1 branch from its headquarters in Clarinda, IA, .
Cornerstone Bank branch network
Its one office is in Clarinda, IOWA. It had the same number of branches on June 30, 2025.
Cornerstone Bank at a glance
Its CET1 capital ratio was 34.96% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $42.0M
- CET1 ratio, Q2 2026
- 34.96%
- Deposit insurance
- FDIC
- Regulator
- Federal Reserve
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1897
Full financial profile · Is Cornerstone Bank safe? · 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: Clarinda, IA (1 branch) | 3 of 4 | 9.7% | $34.6M |
| State: IA (1 branch) | 249 of 261 | <0.1% | $34.6M |
Ranked by total assets among banks headquartered in the state: Largest banks in Iowa.
Share by county and metro area
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 |
|---|---|---|---|---|
| Page, IA (1 branch) | 5 of 7 | 5.1% | $34.6M | $674.2M |
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 |
|---|---|---|---|
| Cornerstone Bank (main office) | Clarinda, IA | 51632 | $34.6M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 30067) · FFIEC NIC profile (RSSD 843476)