FDIC-insured bank
Security Bank Midwest
Bank headquartered in Tyndall, South Dakota, part of MIDWEST BANCSHARES INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 1600 Main St Tyndall, SD 57066 |
| County | Bon Homme |
| Website | www.sbmidwest.bank |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 485 |
| Federal Reserve RSSD ID | 435255 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | MIDWEST BANCSHARES INC |
| Domestic offices | 6 |
| Financials as of | June 30, 2026 |
Routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.sbmidwest.bank.
See how your odds compare before you apply at Security Bank Midwest.
Offices nearest to headquarters
| Security Bank Midwest main office Tyndall, SD |
1600 Main St, 57066 |
| Viborg Branch Viborg, SD |
105 N. Main Street, 57070 |
| Chancellor Branch Chancellor, SD |
221 Main St, 57015 |
| Lennox Branch Lennox, SD |
200 Security Drive, 57039 |
| Heron Lake Br Heron Lake, MN |
274 10th St, 56137 |
| Jackson, Mn Branch Jackson, MN |
202 Grant St, 56143 |