Bank Branches › Closed and merged banks › Missouri › Southern Missouri Bank
What happened to Southern Missouri Bank?
Southern Missouri Bank in Mansfield, MO (earlier called Farmers and Merchants Bank of Mansfield, Mo.) merged into The Security Bank of Mountain Grove of Ellington, MO on Oct 1, 1991. After 2 more changes of hands, what was Southern Missouri Bank is today part of Midland States Bank (Effingham, IL).
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.
- 1908Farmers and Merchants Bank of Mansfield, Mo. opens in Mansfield, MO
- Jul 24, 1981renamed Southern Missouri Bank
- Oct 1, 1991MERGEDSouthern Missouri Bank merged into The Security Bank of Mountain Grove of Ellington, MO.FDIC certificate 12215 ends; its business continues under certificate 14997.
- Dec 30, 1999MERGEDThe Security Bank of Mountain Grove (by then renamed Sun Security Bank of America) of Ellington, MO merged into Sun Security Bank of Mid-America of Ellington, MO.FDIC certificate 14997 ends; its business continues under certificate 10600.
- Jan 1, 2004MERGEDSun Security Bank of Mid-America (by then renamed Sun Security Bank of America) of Ellington, MO merged into Effingham State Bank of Effingham, IL.FDIC certificate 10600 ends; its business continues under certificate 1040.
- TodayOPEN
Midland States BankMain office Effingham, IL · FDIC certificate 1040 · 58 offices in 2 states on June 30, 2026Every Midland States Bank office → Website on file with the FDIC: www.midlandsb.com
If you still have something from Southern Missouri Bank
A lien that was never released
If a paid-off mortgage, home-equity line or car loan still shows Southern Missouri Bank as lienholder, start with Midland States 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 Midland States Bank to search for the account under the name Southern Missouri 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 Midland States Bank which branch now holds boxes from the Southern Missouri 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 12215 in the FDIC BankFind Suite to see the government's own entry. Corrections: me@byclaude.net.