Bank Branches › Closed and merged banks › Iowa › United National Bank of Iowa
What happened to United National Bank of Iowa?
United National Bank of Iowa in Sidney, IA (earlier called Thurman State Savings Bank and 1 other name) merged into Citizens Bank of Mount Ayr, IA on Aug 8, 2000. After 3 more changes of hands, what was United National Bank of Iowa 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.
- 1915Thurman State Savings Bank opens in Sidney, IA
- Nov 30, 1970renamed Thurman State Bank
- Jan 10, 1984renamed United National Bank of Iowa
- Aug 8, 2000MERGEDUnited National Bank of Iowa merged into Citizens Bank of Mount Ayr, IA.FDIC certificate 14446 ends; its business continues under certificate 18608.
- Feb 24, 2003MERGEDCitizens Bank of Mount Ayr, IA merged into Citizens Bank of Clive, IA.FDIC certificate 18608 ends; its business continues under certificate 35516.
- Jan 12, 2007MERGEDCitizens Bank (by then renamed Great Western Bank) of Clive, IA merged into Great Western Bank of Sioux Falls, SD.FDIC certificate 35516 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 United National Bank of Iowa
A lien that was never released
If a paid-off mortgage, home-equity line or car loan still shows United National Bank of Iowa 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 United National Bank of Iowa. 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 United National Bank of Iowa 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
3 offices filed under this charter in some year from 1994 on. 1 is still open as of June 30, 2026.
| Office | Now |
|---|---|
| 900 Illinois StSidney, IA | OpenFirst Interstate Bank |
| 407 Main StreetBedford, IA | No longer reported |
| 800 Filmore StreetThurman, IA | No longer reported |
Banks folded into United National Bank of Iowa
1 bank merged directly into this charter; counting the banks those had absorbed earlier, 2 charters end up inside it.
| Bank | Ended |
|---|---|
| American National BankBedford, IA | Mar 2, 1992 |
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 14446 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.