Bank Branches › Closed and merged banks › Iowa › F&M Bank-Iowa Central
What happened to F&M Bank-Iowa Central?
F&M Bank-Iowa Central in Marshalltown, IA (earlier called Security Savings Bank and 1 other name) merged into Great Western Bank of Sioux Falls, SD on Apr 23, 2010. After 1 more change of hands, what was F&M Bank-Iowa Central is today part of First Interstate Bank (Billings, MT).
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.
- 1915Security Savings Bank opens in Marshalltown, IA
- Jul 16, 1986renamed Security Bank
- Jun 30, 1998renamed F&M Bank-Iowa Central
- Apr 23, 2010MERGEDF&M Bank-Iowa Central merged into Great Western Bank of Sioux Falls, SD.FDIC certificate 10904 ends; its business continues under certificate 15289.
- Feb 1, 2022MERGEDGreat Western Bank of Sioux Falls, SD merged into First Interstate Bank of Billings, MT.FDIC certificate 15289 ends; its business continues under certificate 1105.
- TodayOPEN
First Interstate BankMain office Billings, MT · FDIC certificate 1105 · 274 offices in 10 states on June 30, 2026Every First Interstate Bank office → Website on file with the FDIC: www.firstinterstatebank.com
If you still have something from F&M Bank-Iowa Central
A lien that was never released
If a paid-off mortgage, home-equity line or car loan still shows F&M Bank-Iowa Central 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 F&M Bank-Iowa Central. 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 F&M Bank-Iowa Central 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. The office list below shows which bank each office reports under now.
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 ▾
Its offices in the FDIC deposit reports
14 offices filed under this charter in some year from 1994 on. 8 are still open as of June 30, 2026.
| Office | Now |
|---|---|
| 11 N 1st AveMarshalltown, IA | OpenFirst Interstate Bank |
| 511 1st Ave ENewton, IA | OpenFirst Interstate Bank |
| 1030 Broad StGrinnell, IA | OpenFirst Interstate Bank |
| 3 E Southridge RdMarshalltown, IA | OpenFirst Interstate Bank |
| 304 S CommercePrairie City, IA | OpenFirst Interstate Bank |
| 610 4th StSully, IA | OpenFirst Interstate Bank |
| 423 Broad StStory City, IA | OpenFirst Interstate Bank |
| 401 2nd StGladbrook, IA | OpenFirst Interstate Bank |
| 402 Lincoln WayAmes, IA | No longer reported |
| 1402 Washington StreetEldora, IA | No longer reported |
| 1463 Broad StreetStory City, IA | No longer reported |
| 102 North Main StreetLaurel, IA | No longer reported |
| 201 High StreetKellogg, IA | No longer reported |
| 5th and Market StreetsSteamboat Rock, IA | No longer reported |
Banks folded into F&M Bank-Iowa Central
5 banks merged directly into this charter; counting the banks those had absorbed earlier, 7 charters end up inside it.
| Bank | Ended |
|---|---|
| F&M Bank-Iowa South CentralGrinnell, IA | Sep 1, 1999 |
| F&M Bank-Iowa Story CountyStory City, IA | Sep 1, 1999 |
| Hawkeye Bank & Trust, Eldora, IowaEldora, IA | Feb 7, 1987 |
| The First National Bank of Prairie CityPrairie City, IA | Jul 25, 1986 |
| State BankGladbrook, IA | Nov 21, 1980 |
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 10904 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.