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Frontier Bank
✓ FDIC-insured · Active FDIC Certificate #33922
Frontier Bank is an FDIC-insured state-chartered savings bank, headquartered in Sioux Falls, South Dakota, established in 1994. As of the 06/30/2026 FDIC call report, it reported $349M in total assets and $324M in deposits. FDIC location data lists 5 offices across 2 states and territories, with the most in Iowa (3). The FDIC classifies it as a community bank. It is owned by the holding company ROCK RIVERS BCORP (Rock Rapids, IA).
Financial data as of the 06/30/2026 FDIC call report.
Branches by state
Frontier Bank has offices in 2 states and territories. Counts come from the FDIC's institution location records.
| State | Offices | Share |
|---|---|---|
| Iowa | 3 | 60.0% |
| South Dakota | 2 | 40.0% |
Branch locations
| Frontier Bank Little Rock Branch · Full Service - Brick And Mortar | 323 Main St Little Rock, IA 51243 Map ↗ |
| Frontier Bank George Branch · Full Service - Brick And Mortar | 210 E Dakota Ave George, IA 51237 Map ↗ |
| Frontier Bank Rock Rapids Branch · Full Service - Brick And Mortar | 301 1st Ave Rock Rapids, IA 51246 Map ↗ |
| Frontier Bank Sioux Falls Branch · Full Service - Brick And Mortar | 3501 W 57th St Sioux Falls, SD 57108 Map ↗ |
| Frontier Bank Frontier Bank · Full Service - Brick And Mortar | 101 S Phillips Ave Sioux Falls, SD 57104 Map ↗ |
Holding company: ROCK RIVERS BCORP
The FDIC lists ROCK RIVERS BCORP, based in Rock Rapids, IA, as the top holding company for Frontier Bank. The FDIC shows no other active insured banks under the same holding company.
Similar-size banks in South Dakota
Active FDIC-insured banks headquartered in South Dakota with total assets closest to Frontier Bank's $349M. See all banks in South Dakota.
| Bank | HQ city | Assets | Offices |
|---|---|---|---|
| First National Bank | Oldham | $478M | 14 |
| First National Bank in Philip | Philip | $458M | 2 |
| BankStar Financial | Elkton | $363M | 3 |
| Rivers Edge Bank | Marion | $357M | 5 |
| Security Bank Midwest | Tyndall | $304M | 6 |
| One American Bank | Centerville | $285M | 3 |
| Commercial State Bank, of Wagner | Wagner | $260M | 1 |
| Farmers State Bank | Parkston | $255M | 3 |
Frontier Bank: common questions
Is Frontier Bank FDIC-insured?
Yes. Frontier Bank is an active FDIC-insured institution, FDIC Certificate #33922. Deposits are insured up to $250,000 per depositor, per ownership category. You can confirm this on FDIC BankFind.
Where is Frontier Bank headquartered?
Frontier Bank is headquartered at 101 S Phillips Ave, Sioux Falls, SD 57104, according to FDIC records.
How many branches does Frontier Bank have?
FDIC location data lists 5 offices for Frontier Bank in 2 states and territories. The most are in Iowa (3), followed by South Dakota (2).
Who owns Frontier Bank?
The FDIC lists ROCK RIVERS BCORP of Rock Rapids, IA as the top holding company for Frontier Bank.
Source: FDIC BankFind Suite (institution, location, and call report data). BankNearMe.com does not rank or rate banks.