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Keystone Savings Bank Locations & Branches Keystone, Iowa
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Keystone Savings Bank operates 5 branches from its headquarters in Keystone, IA, .
Keystone Savings Bank branch network
All 5 branches are in IOWA, across 5 cities. Its largest office by deposits is the Keystone Branch office in Keystone, IA, with $46.9M (27.8% of its branch deposits). It had the same number of branches on June 30, 2025.
Keystone Savings Bank at a glance
Its CET1 capital ratio was 15.37% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $200.8M
- CET1 ratio, Q2 2026
- 15.37%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1935
Full financial profile · Is Keystone Savings Bank safe? · Keystone Savings 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: Keystone, IA (1 branch) | 1 of 1 | 100.0% | $46.9M |
| State: IA (5 branches) | 158 of 261 | 0.1% | $168.7M |
Ranked by total assets among banks headquartered in the state: Largest banks in Iowa.
Share by county and metro area
Keystone Savings 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 |
|---|---|---|---|---|
| Iowa, IA (2 branches) | 2 of 7 | 19.8% | $78.8M | $398.7M |
| Benton, IA (1 branch) | 8 of 11 | 5.9% | $46.9M | $792.8M |
| Linn, IA (1 branch) | 20 of 26 | 0.4% | $24.7M | $7.01B |
| Polk, IA (1 branch) | 36 of 39 | <0.1% | $18.2M | $32.18B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Cedar Rapids, IA (2 branches) | 24 of 35 | 0.8% | $71.7M | $8.53B |
| Des Moines-West Des Moines, IA (1 branch) | 55 of 57 | <0.1% | $18.2M | $37.99B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Keystone Branch | Keystone, IA | 52249 | $46.9M |
| Keystone Savings Bank (main office) | Marengo, IA | 52301 | $40.8M |
| Victor Branch | Victor, IA | 52347 | $38.0M |
| Center Point Branch | Center Point, IA | 52213 | $24.7M |
| Pleasant Hill Branch | Pleasant Hill, IA | 50327 | $18.2M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 17993) · FFIEC NIC profile (RSSD 931944)