Branch Network
Farmers & Merchants Union Bank Locations & Branches Columbus, Wisconsin
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Farmers & Merchants Union Bank operates 13 branches from its headquarters in Columbus, WI, . Its main office is at 159 W James St, Columbus, WI 53925.
Farmers & Merchants Union Bank branch network
All 13 branches are in WISCONSIN, across 10 cities. Beaver Dam, WI has the most of its branches, 3. Its largest office by deposits is the Farmers and Merchants Union Bank office in Columbus, WI, with $178.9M (23.8% of its branch deposits). On June 30, 2025 it had 9 branches, 4 fewer than in 2026.
Farmers & Merchants Union Bank at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 9.97% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $872.1M
- Tier 1 leverage ratio, Q2 2026
- 9.97%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 041
- Established
- 1861
Full financial profile · Is Farmers & Merchants Union Bank safe? · Farmers & Merchants Union Bank Q3 2026 call report, filed October 26, 2026 (preliminary) · 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: Columbus, WI (2 branches) | 1 of 2 | 83.6% | $357.8M |
| State: WI (13 branches) | 40 of 185 | 0.4% | $751.9M |
Ranked by total assets among banks headquartered in the state: Largest banks in Wisconsin.
Share by county and metro area
Farmers & Merchants 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 |
|---|---|---|---|---|
| Columbia, WI (6 branches) | 2 of 8 | 23.4% | $465.3M | $1.99B |
| Dodge, WI (4 branches) | 2 of 10 | 11.4% | $179.6M | $1.58B |
| Sauk, WI (1 branch) | 11 of 13 | 2.4% | $58.8M | $2.44B |
| Juneau, WI (1 branch) | 3 of 4 | 4.9% | $28.7M | $590.1M |
| Rock, WI (1 branch) | 17 of 18 | 0.6% | $19.5M | $3.45B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Madison, WI (6 branches) | 20 of 41 | 1.5% | $465.3M | $30.15B |
| Beaver Dam, WI (4 branches) | 2 of 10 | 11.4% | $179.6M | $1.58B |
| Baraboo, WI (1 branch) | 11 of 13 | 2.4% | $58.8M | $2.44B |
| Janesville-Beloit, WI (1 branch) | 17 of 18 | 0.6% | $19.5M | $3.45B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Farmers and Merchants Union Bank | Columbus, WI | 53925 | $178.9M |
| Industrial Drive Branch | Columbus, WI | 53925 | $178.9M |
| American Bank of Beaver Dam Branch | Beaver Dam, WI | 53916 | $103.7M |
| Wisconsin River Bank Branch | Sauk City, WI | 53583 | $58.8M |
| Friesland Branch | Friesland, WI | 53935 | $53.1M |
| Northside Branch | Beaver Dam, WI | 53916 | $36.6M |
| Necedah Branch | Necedah, WI | 54646 | $28.7M |
| New Juneau Branch | Juneau, WI | 53039 | $25.4M |
| Lodi Branch | Lodi, WI | 53555 | $23.1M |
| Janesville Branch | Janesville, WI | 53545 | $19.5M |
| Rio Branch | Rio, WI | 53960 | $16.9M |
| Farmers & Merchants Union Bank Branch | Fall River, WI | 53932 | $14.5M |
| The American National Bank Branch | Beaver Dam, WI | 53916 | $13.9M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 14445) · FFIEC NIC profile (RSSD 51842)