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Bank Branches › Closed and merged banks › South Dakota › First Western Bank

FDIC certificate 12645 · Custer, SD

What happened to First Western Bank?

First Western Bank in Custer, SD (earlier called Custer County Bank, Custer City, So. Dak.) merged into The First Western Bank Edgemont of Custer, SD on Apr 1, 1989. After 2 more changes of hands, what was First Western Bank is today part of First Interstate Bank (Billings, MT).

1890
opened
1989
merged away
2
names it used
3
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. 1890
    Custer County Bank, Custer City, So. Dak. opens in Custer, SD
  2. Oct 28, 1988
    renamed First Western Bank
  3. Apr 1, 1989
    MERGEDFirst Western Bank merged into The First Western Bank Edgemont of Custer, SD.FDIC certificate 12645 ends; its business continues under certificate 1685.
  4. Sep 29, 2006
    MERGEDThe First Western Bank Edgemont (by then renamed The First Western Bank Custer) of Custer, SD merged into First Western Bank of Wall, SD.FDIC certificate 1685 ends; its business continues under certificate 488.
  5. Sep 26, 2009
    MERGEDFirst Western Bank of Wall, SD merged into First Interstate Bank of Billings, MT.FDIC certificate 488 ends; its business continues under certificate 1105.
  6. Today
    OPEN
    First Interstate BankMain office Billings, MT · FDIC certificate 1105 · 274 offices in 10 states on June 30, 2026

    Every First Interstate Bank office →   Website on file with the FDIC: www.firstinterstatebank.com

If you still have something from First Western Bank

A lien that was never released

If a paid-off mortgage, home-equity line or car loan still shows First Western Bank as lienholder, start with First Interstate 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 First Interstate Bank to search for the account under the name First Western Bank. 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 First Interstate Bank which branch now holds boxes from the First Western Bank 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 12645 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.