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Mound City Bank Locations & Branches Platteville, Wisconsin
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Mound City Bank operates 6 branches from its headquarters in Platteville, WI, .
Mound City Bank branch network
All 6 branches are in WISCONSIN, across 5 cities. Platteville, WI has the most of its branches, 2. Its largest office by deposits is its main office in Platteville, WI, with $260.3M (55.6% of its branch deposits). It had the same number of branches on June 30, 2025.
Mound City Bank at a glance
Its CET1 capital ratio was 16.72% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $550.7M
- CET1 ratio, Q2 2026
- 16.72%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1915
Full financial profile · Is Mound City Bank safe? · Mound City 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: Platteville, WI (2 branches) | 1 of 6 | 51.1% | $260.3M |
| State: WI (6 branches) | 66 of 185 | 0.2% | $468.0M |
Ranked by total assets among banks headquartered in the state: Largest banks in Wisconsin.
Share by county and metro area
Mound City 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 |
|---|---|---|---|---|
| Grant, WI (3 branches) | 2 of 10 | 20.0% | $309.8M | $1.55B |
| Dane, WI (1 branch) | 26 of 33 | 0.3% | $72.9M | $26.10B |
| Iowa, WI (1 branch) | 5 of 6 | 6.8% | $42.8M | $629.6M |
| Lafayette, WI (1 branch) | 4 of 6 | 8.6% | $42.5M | $493.6M |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Platteville, WI (3 branches) | 2 of 10 | 20.0% | $309.8M | $1.55B |
| Madison, WI (2 branches) | 30 of 41 | 0.4% | $115.6M | $30.15B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Mound City Bank (main office) | Platteville, WI | 53818 | $260.3M |
| Mount Horeb Branch | Mount Horeb, WI | 53572 | $72.9M |
| Cuba City Branch | Cuba City, WI | 53807 | $49.5M |
| Mineral Point Branch (New) | Mineral Point, WI | 53565 | $42.8M |
| Belmont Branch | Belmont, WI | 53510 | $42.5M |
| Second Street Motor Branch | Platteville, WI | 53818 | $0 |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 9037) · FFIEC NIC profile (RSSD 259442)