Branch Network
Union Bank Locations & Branches Grand Rapids, Michigan
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Union Bank operates 8 branches from its headquarters in Grand Rapids, MI, .
Union Bank branch network
All 8 branches are in MICHIGAN, across 7 cities. Grand Rapids, MI has the most of its branches, 2. Its largest office by deposits is the Lake Odessa Branch office in Lake Odessa, MI, with $116.0M (37.0% of its branch deposits). It had the same number of branches on June 30, 2025.
Union Bank at a glance
Its CET1 capital ratio was 9.77% at Q2 2026, above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $396.7M
- CET1 ratio, Q2 2026
- 9.77%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Established
- 1934
Full financial profile · Is Union 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: Grand Rapids, MI (2 branches) | 23 of 24 | 0.1% | $26.8M |
| State: MI (8 branches) | 60 of 95 | 0.1% | $313.5M |
Ranked by total assets among banks headquartered in the state: Largest banks in Michigan.
Share by county and metro area
Union 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 |
|---|---|---|---|---|
| Ionia, MI (1 branch) | 3 of 5 | 15.0% | $116.0M | $775.7M |
| Clinton, MI (1 branch) | 4 of 5 | 10.5% | $64.4M | $615.3M |
| Eaton, MI (2 branches) | 10 of 10 | 3.7% | $61.1M | $1.67B |
| Kent, MI (3 branches) | 23 of 24 | 0.2% | $40.7M | $25.22B |
| Barry, MI (1 branch) | 4 of 5 | 5.4% | $31.3M | $583.2M |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Grand Rapids-Kentwood, MI (4 branches) | 20 of 27 | 0.5% | $156.7M | $33.10B |
| Lansing-East Lansing, MI (3 branches) | 14 of 19 | 1.0% | $125.5M | $12.65B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Lake Odessa Branch | Lake Odessa, MI | 48849 | $116.0M |
| Westphalia Branch | Westphalia, MI | 48894 | $64.4M |
| Dimondale Branch | Dimondale, MI | 48821 | $40.5M |
| Hastings Branch | Hastings, MI | 49058 | $31.3M |
| Union Bank (main office) | Grand Rapids, MI | 49546 | $26.8M |
| Mulliken Branch | Mulliken, MI | 48861 | $20.6M |
| Ada Branch | Ada, MI | 49301 | $13.9M |
| The Cascade Branch | Grand Rapids, MI | 49546 | $0 |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 14722) · FFIEC NIC profile (RSSD 390840)