Branch Network
Premierbank Locations & Branches Fort Atkinson, Wisconsin
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Premierbank operates 7 branches from its headquarters in Fort Atkinson, WI, .
Premierbank branch network
All 7 branches are in WISCONSIN, across 6 cities. Fort Atkinson, WI has the most of its branches, 2. Its largest office by deposits is its main office in Fort Atkinson, WI, with $189.4M (42.6% of its branch deposits). On June 30, 2025 it had 9 branches, 2 more than in 2026.
Premierbank at a glance
Its CET1 capital ratio was 12.54% at Q2 2026, above regulatory requirements.
- Total assets, Q2 2026
- $583.9M
- CET1 ratio, Q2 2026
- 12.54%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1863
Full financial profile · Is Premierbank safe? · Premierbank 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: Fort Atkinson, WI (2 branches) | 1 of 3 | 61.9% | $189.4M |
| State: WI (7 branches) | 68 of 185 | 0.2% | $444.2M |
Ranked by total assets among banks headquartered in the state: Largest banks in Wisconsin.
Share by county and metro area
Premierbank'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 |
|---|---|---|---|---|
| Jefferson, WI (5 branches) | 3 of 11 | 14.8% | $347.4M | $2.34B |
| Walworth, WI (1 branch) | 10 of 15 | 2.7% | $68.8M | $2.51B |
| Rock, WI (1 branch) | 16 of 18 | 0.8% | $28.0M | $3.45B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Watertown-Fort Atkinson, WI (5 branches) | 3 of 11 | 14.8% | $347.4M | $2.34B |
| Whitewater, WI (1 branch) | 10 of 15 | 2.7% | $68.8M | $2.51B |
| Janesville-Beloit, WI (1 branch) | 16 of 18 | 0.8% | $28.0M | $3.45B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Premierbank (main office) | Fort Atkinson, WI | 53538 | $189.4M |
| Jefferson Branch | Jefferson, WI | 53549 | $88.3M |
| Commercial Bank Branch | Whitewater, WI | 53190 | $68.8M |
| Johnson Creek Branch | Johnson Creek, WI | 53038 | $50.7M |
| Janesville Branch | Janesville, WI | 53545 | $28.0M |
| Sullivan Branch | Sullivan, WI | 53178 | $19.1M |
| Drive-In Facility | Fort Atkinson, WI | 53538 | $0 |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 5295) · FFIEC NIC profile (RSSD 907547)