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Sibley State Bank Locations & Branches Sibley, Iowa
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Sibley State Bank operates 1 branch from its headquarters in Sibley, IA, .
Sibley State Bank branch network
Its one office is in Sibley, IOWA. It had the same number of branches on June 30, 2025.
Sibley State Bank at a glance
Its CET1 capital ratio was 15.67% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $104.4M
- CET1 ratio, Q2 2026
- 15.67%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Established
- 1894
Full financial profile · Is Sibley State 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: Sibley, IA (1 branch) | 1 of 2 | 67.8% | $91.5M |
| State: IA (1 branch) | 209 of 261 | <0.1% | $91.5M |
Ranked by total assets among banks headquartered in the state: Largest banks in Iowa.
Share by county and metro area
Sibley State 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 |
|---|---|---|---|---|
| Osceola, IA (1 branch) | 1 of 4 | 38.6% | $91.5M | $237.1M |
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 |
|---|---|---|---|
| Sibley State Bank (main office) | Sibley, IA | 51249 | $91.5M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 11764) · FFIEC NIC profile (RSSD 598543)