Branch Network
Union State Bank Locations & Branches Winterset, Iowa
BankRegReports is independent of Union State Bank and never asks for online banking logins or passwords.
Union State Bank operates 3 branches from its headquarters in Winterset, IA, .
Union State Bank branch network
All 3 branches are in IOWA, across 3 cities. Its largest office by deposits is its main office in Winterset, IA, with $121.0M (96.6% of its branch deposits). It had the same number of branches on June 30, 2025.
Union State Bank at a glance
Its CET1 capital ratio was 13.06% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $136.5M
- CET1 ratio, Q2 2026
- 13.06%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Established
- 1935
Full financial profile · Is Union 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: Winterset, IA (1 branch) | 2 of 3 | 34.7% | $121.0M |
| State: IA (3 branches) | 184 of 261 | <0.1% | $125.3M |
Ranked by total assets among banks headquartered in the state: Largest banks in Iowa.
Share by county and metro area
Union 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 |
|---|---|---|---|---|
| Madison, IA (2 branches) | 2 of 4 | 26.0% | $121.0M | $465.8M |
| Dallas, IA (1 branch) | 27 of 28 | 0.2% | $4.3M | $2.54B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Des Moines-West Des Moines, IA (3 branches) | 36 of 57 | 0.3% | $125.3M | $37.99B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Union State Bank (main office) | Winterset, IA | 50273 | $121.0M |
| West Des Moines Branch | West Des Moines, IA | 50266 | $4.3M |
| Truro Branch | Truro, IA | 50257 | $0 |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 14982) · FFIEC NIC profile (RSSD 148340)