FDIC-insured bank
Ergo Bank — Markesan, WI
Bank headquartered in Markesan, Wisconsin, part of FS BANCSHARES INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 730 N Margaret St Markesan, WI 53946 |
| County | Green Lake |
| Website | www.ergobank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 10004 |
| Federal Reserve RSSD ID | 599643 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | FS BANCSHARES INC |
| Domestic offices | 6 |
| Financials as of | June 30, 2026 |
How to find your Ergo Bank routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.ergobank.com.
Share one credit line with people you trust. Everyone gets their own limit.
Offices nearest to headquarters
| Ergo Bank main office Markesan, WI |
730 N Margaret St, 53946 |
| 314 West State Street Branch Fox Lake, WI |
314 West State Street, 53933 |
| Lomira Branch Lomira, WI |
250 Main Street, 53048 |
| Kendall Branch Kendall, WI |
102 E South Railroad St, 54638 |
| Wilton Branch Wilton, WI |
406 Main Street, 54670 |
| Norwalk Branch Norwalk, WI |
108 Main St, 54648 |
Where Ergo Bank has offices
Cities with the most Ergo Bank offices
Largest banks headquartered elsewhere in Wisconsin
| Associated Bank, National Association Green Bay | $51.76 billion |
| Nicolet National Bank Green Bay | $15.39 billion |
| Johnson Bank Racine | $7.07 billion |
| Bank First, N.A. Manitowoc | $5.94 billion |
| John Deere Financial, f.s.b. Middleton | $4.93 billion |
| Town Bank, National Association Hartland | $4.71 billion |
| First Business Bank Madison | $4.41 billion |
| Lake Ridge Bank Middleton | $3.35 billion |
Compare before you open an account: today's CD and savings rates, the CD calculator and the savings calculator.
