Security Bank Midwest
Tyndall, SD
IDRSSD: 435255
Total Assets
$328.27M
Latest filing
Total Deposits
$245.50M
Latest filing
Net Interest Margin
3.31%
Profitability
Key People
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Locations
Main office and branches. Select to view on the map.
Main Office
Security Bank Midwest
1600 Main St
Tyndall, SD 57066
Full Service - Brick and Mortar
Updated 01/30/2026Established 11/01/1932FDIC Certificate 352
Branches (5)
Page 1 of 1| Name | Address | City / State |
|---|---|---|
| Security Bank Midwest (Main) | 1600 Main St | Tyndall, SD |
| HERON LAKE BR | 274 10th St | Heron Lake, MN |
| VIBORG BRANCH | 105 N. Main Street | Viborg, SD |
| JACKSON, MN BRANCH | 202 Grant St | Jackson, MN |
| LENNOX BRANCH | 200 Security Drive | Lennox, SD |
| CHANCELLOR BRANCH | 221 Main St | Chancellor, SD |
Showing 5 of 5
Quarterly Trends
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Total Assets vs Total Liabilities
Loans & Leases vs Deposits
Interest Income vs Expense
Net Interest Income
Noninterest Expense vs Income
Net Income
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Institution Profile
| Institution Class | Commercial bank, state charter, Fed non-member, and supervised by the FDIC |
| Primary Regulator | FDIC |
| Established Date | 11/01/1932 |
| Community Bank | Yes |
| Ownership Type | Not Mutual |
| ZIP | 57066 |
| State and County Number | 46009 |
| Subchapter S Corporations | Yes |
| Trust Powers | N/A |
| Federal Reserve ID Number | 09 |
| Numeric code | 21 |
| Insured by FDIC | Institutions that are currently open and insured by the FDIC |
| Federal Reserve District | Kansas City |
| Core Based Statistical Area Name | N/A |
Operational Info
| Number of Employees | 30 |
| Domestic Offices | 6 |
| Foreign Offices | 0 |
| US Offices | 0 |
| Directly owned by another bank (CERT) | No |
| Last Structure Change Effective Date | 06/30/2024 |
| Date of Deposit Insurance | 01/01/1934 |
| Primary Insurance Agency | DIF |
| Website | www.sbmidwest.bank |
| Data Updated | 01/30/2026 |
| CERT | 485 |
| Office of The Comptroller District: | — |
| Office of Thrift Supervision Region | N/A |
Financial Summary
| Total Assets | $328.27M |
| Total Deposits | $245.50M |
| Total Liabilities | $300.23M |
| Total Equity Capital | $28.04M |
| Net Income | $558.00k |
| Net Loans and Leases | $216.00M |
| Assets Per Employee ($Millions) | $10.59M |
| Bank Premises and Fixed Assets | $12.84M |
| Cash and Balances due from Depository Institutions | $8.60M |
| Deposits Held in Domestic Offices | $245.50M |
Key Performance Ratios
| Return on Assets (ROA) | 0.68% |
| Return on Equity (ROE) | 8.05% |
| Net Interest Margin | 3.31% |
| Efficiency Ratio | 78.46% |
| Tier 1 Risk-Based Capital Ratio | 0% |
| Net Loans and Leases to Core Deposits | 0% |
| Credit Loss Provision to Assets | 0% |
| Cash Dividends to Net Income (YTD Only) | 0% |
| Equity Capital to Assets | 8.542% |
| Earning Assets to total Assets | 91.53% |
Income and Expense
| Total Interest Income | $4.26M |
| Total Noninterest Income | $87.00k |
| Total Interest Expense | $1.76M |
| Total Noninterest Expense | $2.02M |
| Net Interest Income | $2.49M |
| Pre-tax Net Operating Income | $556.00k |
| Provision for Credit Losses | $0 |
| Discontinued Operations (Extraordinary Gains - Net) | $0 |
Additional Financial Info
| Goodwill and Other Intangibles | $0 |
| All Other Assets | — |
| Other Real Estate Owned | $0 |
| Other borrowed funds | $53.50M |
| Federal Funds Sold & Reverse Repurchase Agreement | $0 |
| Federal Funds Purchased and Repurchased Agreement | $0 |
| All Other Liabilities | $1.23M |
| Total Liabilities and Capital | $328.27M |
Securities
| Securities | $81.38M |
| Available-for-sale debt securities | $21.67M |
| Equity securities with readily determinable fair values not held for trading | — |
| Held-to-maturity securities | $59.69M |
| Subordinated Debt | $0 |
| Trading Account Assets | $0 |
| Trading Liabilities | $0 |
Frequently Asked Questions
What are the total assets of Security Bank Midwest?
$328.27M as of the latest filing.
How much are Security Bank Midwest's total deposits?
$245.50M in total deposits.
Where is Security Bank Midwest located?
Tyndall, SD.
What is the Net Interest Margin?
3.31%.
How many domestic offices does it operate?
6.
When was it established?
11/01/1932.
What is the Return on Assets (ROA)?
0.68%.
How much are total loans and leases?
$216.00M (latest filing).
What is the total interest income (latest filing)?
$4.26M.