Branch Network
Commercial Bank Locations & Branches Ithaca, Michigan
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Commercial Bank operates 10 branches from its headquarters in Ithaca, MI, .
Commercial Bank branch network
All 10 branches are in MICHIGAN, across 9 cities. Mason, MI has the most of its branches, 2. Its largest office by deposits is its main office in Ithaca, MI, with $157.2M (33.1% of its branch deposits). It had the same number of branches on June 30, 2025.
Commercial Bank at a glance
Its CET1 capital ratio was 17.40% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $552.7M
- CET1 ratio, Q2 2026
- 17.40%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Established
- 1962
Full financial profile · Is Commercial 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: Ithaca, MI (1 branch) | 1 of 3 | 60.8% | $157.2M |
| State: MI (10 branches) | 43 of 95 | 0.2% | $475.2M |
Ranked by total assets among banks headquartered in the state: Largest banks in Michigan.
Share by county and metro area
Commercial 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 |
|---|---|---|---|---|
| Gratiot, MI (4 branches) | 1 of 4 | 40.4% | $295.6M | $730.9M |
| Ingham, MI (3 branches) | 12 of 17 | 1.1% | $101.1M | $9.60B |
| Montcalm, MI (1 branch) | 7 of 7 | 4.1% | $39.3M | $956.8M |
| Barry, MI (1 branch) | 3 of 5 | 5.8% | $33.9M | $583.2M |
| Ottawa, MI (1 branch) | 15 of 15 | <0.1% | $5.2M | $6.14B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Alma, MI (4 branches) | 1 of 4 | 40.4% | $295.6M | $730.9M |
| Lansing-East Lansing, MI (3 branches) | 16 of 19 | 0.8% | $101.1M | $12.65B |
| Grand Rapids-Kentwood, MI (2 branches) | 26 of 27 | 0.1% | $44.5M | $33.10B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Commercial Bank (main office) | Ithaca, MI | 48847 | $157.2M |
| Wright Avenue Branch | Alma, MI | 48801 | $68.3M |
| Mason State Branch | Mason, MI | 48854 | $53.5M |
| Okemos Branch | Okemos, MI | 48864 | $40.2M |
| Greenville West Branch | Greenville, MI | 48838 | $39.3M |
| St. Louis Branch | Saint Louis, MI | 48880 | $37.6M |
| Hastings Branch | Hastings, MI | 49058 | $33.9M |
| Middleton Branch | Middleton, MI | 48856 | $32.4M |
| Cedar Street Branch | Mason, MI | 48854 | $7.3M |
| Grand Rapids Branch | Grand Rapids, MI | 49534 | $5.2M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 18584) · FFIEC NIC profile (RSSD 513340)