Security First Bank holds $1.7B in deposits across 12 counties in 2 ranked markets and 2 states. Its deposit footprint is highly concentrated: the top three counties (Pennington County, Lancaster County, Gage County) hold 60% of its deposits, and Nebraska accounts for 72% of the total. It ranks among the three largest institutions in 9 of the 12 counties where it operates.
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Data as of June 30, 2025 (FDIC Summary of Deposits)
| County | Deposits | County’s % of Bank’s Deposits | Bank’s % of County Deposits | Branches | |
|---|---|---|---|---|---|
| 1. | Pennington County, SD | $400M | 23.2% | 12.4% | 2 |
| 2. | Lancaster County, NE | $336M | 19.5% | 2.4% | 3 |
| 3. | Gage County, NE | $301M | 17.5% | 34.9% | 6 |
| 4. | Sheridan County, NE | $152M | 8.8% | 30.0% | 2 |
| 5. | Cherry County, NE | $136M | 7.9% | 38.8% | 3 |
| 6. | Cheyenne County, NE | $120M | 7.0% | 27.8% | 1 |
| 7. | Bennett County, SD | $81M | 4.7% | 100.0% | 1 |
| 8. | Dawes County, NE | $68M | 3.9% | 23.0% | 2 |
| 9. | Dawson County, NE | $53M | 3.1% | 3.7% | 2 |
| 10. | Sioux County, NE | $30M | 1.7% | 64.1% | 1 |
| 11. | Thomas County, NE | $24M | 1.4% | 38.6% | 1 |
| 12. | Gosper County, NE | $23M | 1.3% | 32.7% | 1 |
Deposits are as reported to the FDIC at branch level, June 30, 2025, and are nominal. “County’s % of Bank’s Deposits” is this county’s share of the institution’s total deposits; “Bank’s % of County Deposits” is this institution’s deposits as a percent of all deposits booked in that county. Counties within a Combined or Metropolitan Statistical Area link to their full profile; other counties are shown for completeness.
All 293 markets and the 1,533 counties within a CSA or MSA are covered in the Market Intelligence resource. See the methodology for how each figure is built and when to expect updates.