Bank BranchesEvery insured bank office · FDIC · 1994–2026

Bank Branches › Closed and merged banks › Wisconsin › Mid-Wisconsin Bank of Colby

FDIC certificate 17774 · Colby, WI

What happened to Mid-Wisconsin Bank of Colby?

Mid-Wisconsin Bank of Colby in Colby, WI (earlier called Security State Bank of Colby) merged into Mid-Wisconsin Bank of Medford, WI on Mar 25, 1994. After 1 more change of hands, what was Mid-Wisconsin Bank of Colby is today part of Nicolet National Bank (Green Bay, WI).

1920
opened
1994
merged away
2
names it used
2
steps to today's bank

The chain, step by step

From the day it opened to the bank at the end of the chain today. Each step is one entry in the FDIC's record.

  1. 1920
    Security State Bank of Colby opens in Colby, WI
  2. Sep 1, 1990
    renamed Mid-Wisconsin Bank of Colby
  3. Mar 25, 1994
    MERGEDMid-Wisconsin Bank of Colby merged into Mid-Wisconsin Bank of Medford, WI.FDIC certificate 17774 ends; its business continues under certificate 13273.
  4. Apr 26, 2013
    MERGEDMid-Wisconsin Bank of Medford, WI merged into Nicolet National Bank of Green Bay, WI.FDIC certificate 13273 ends; its business continues under certificate 57038.
  5. Today
    OPEN
    Nicolet National BankMain office Green Bay, WI · FDIC certificate 57038 · 115 offices in 6 states on June 30, 2026

    Every Nicolet National Bank office →   Website on file with the FDIC: www.nicoletbank.com

If you still have something from Mid-Wisconsin Bank of Colby

A lien that was never released

If a paid-off mortgage, home-equity line or car loan still shows Mid-Wisconsin Bank of Colby as lienholder, start with Nicolet National Bank. In a merger the surviving bank takes over the other bank's loans, so it is the bank to ask for a recordable lien release; if the loan was sold along the way, it can tell you to whom.

The FDIC says it cannot process lien releases for banks that merged or were acquired without government assistance, which is what the record shows here.

Record the release with the same county office that recorded the original mortgage or deed of trust.

An old account, passbook or CD

Ask Nicolet National Bank to search for the account under the name Mid-Wisconsin Bank of Colby. A passbook or certificate shows an account existed. It doesn't show the money is still there, and the OCC notes that federal rules require banks to keep most account records for five years.

Accounts nobody touches are eventually turned over to a state. The OCC puts the usual wait at three to five years with no activity, set by each state's law. Search the unclaimed-property program of the state of the owner's last known address on the bank's records, and any other state they lived in. It is free to search and to claim through a state's own site, and MissingMoney.com, an official site of the state administrators' association, searches most states at once.

A safe deposit box

Ask Nicolet National Bank which branch now holds boxes from the Mid-Wisconsin Bank of Colby office you used. The OCC says a box with no activity for three to five years (the period is set by state statute) is likely treated as dormant, and its contents may be turned over to the state's unclaimed-property program.

Box contents are not covered by FDIC insurance.

Not sure this is your bank?

Many banks shared a name. Match the city and the years above against your paperwork, or search again with the town.

Credit unions were never FDIC-insured and are not in this record; the NCUA credit union lookup covers those. Banks that closed before about 1970 are not in the FDIC's list either.

One caution: banks also sell single branches. If the office you used was sold to a different bank along the way, the account went with the branch, not with this chain.

This page is drawn from FDIC records and federal guidance. It is not legal advice, and BankBranches is not a bank or a government office. More detail: lien releases · old passbooks and CDs · safe deposit boxes · unclaimed money.

Where the guidance comes from ▾

Source: FDIC BankFind institution and history records, read Nov 15, 2026. The FDIC's list covers banks that ended in about 1970 or later. Look up certificate 17774 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.