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American Bank & Trust Locations & Branches Sioux Falls, South Dakota
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American Bank & Trust operates 20 branches from its headquarters in Sioux Falls, SD, .
American Bank & Trust branch network
Its 20 branches span 3 states and 17 cities. The most are in SOUTH DAKOTA (18), MINNESOTA (1) and NORTH DAKOTA (1). SOUTH DAKOTA holds 98.0% of its branch deposits. Sioux Falls, SD has the most of its branches, 4. Its largest office by deposits is the Pierre Br office in Pierre, SD, with $392.2M (20.1% of its branch deposits). It had the same number of branches on June 30, 2025.
American Bank & Trust at a glance
Its CET1 capital ratio was 15.24% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $2.25B
- CET1 ratio, Q2 2026
- 15.24%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1892
Full financial profile · Is American Bank & Trust safe? · American Bank & Trust call report · Routing number
Deposit market share
Share of all FDIC-insured deposits held in each area, from the June 30, 2026 Summary of Deposits. Rank 1 is the largest holder. Shares are by bank charter, not by holding company.
| Area | Rank | Deposit share | Deposits |
|---|---|---|---|
| City: Sioux Falls, SD (4 branches) | 13 of 33 | <0.1% | $367.3M |
| State: SD (18 branches) | 10 of 82 | 0.2% | $1.91B |
Ranked by total assets among banks headquartered in the state: Largest banks in South Dakota.
Share by county and metro area
American Bank & Trust's share of FDIC-insured deposits in the counties and metro areas where it has branches, from the June 30, 2026 Summary of Deposits. Up to the ten largest of each are shown, by the bank's deposits. Rank 1 is the largest holder. Banks only: credit unions are not in the Summary of Deposits.
Counties
| County | Rank | Deposit share | Deposits | County total |
|---|---|---|---|---|
| Hughes, SD (1 branch) | 2 of 5 | 23.5% | $392.2M | $1.67B |
| Minnehaha, SD (3 branches) | 10 of 25 | <0.1% | $301.4M | $478.92B |
| Beadle, SD (2 branches) | 1 of 5 | 51.9% | $270.8M | $522.1M |
| Kingsbury, SD (2 branches) | 1 of 4 | 59.9% | $177.7M | $296.6M |
| Codington, SD (1 branch) | 6 of 10 | 10.0% | $159.4M | $1.59B |
| Lincoln, SD (3 branches) | 8 of 26 | <0.1% | $158.8M | $647.52B |
| Brown, SD (1 branch) | 5 of 12 | 6.0% | $120.3M | $2.00B |
| Hand, SD (1 branch) | 2 of 2 | 49.5% | $99.8M | $201.4M |
| Jerauld, SD (1 branch) | 1 of 1 | 100.0% | $85.1M | $85.1M |
| Aurora, SD (1 branch) | 2 of 2 | 33.7% | $69.7M | $207.0M |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Sioux Falls, SD (6 branches) | 11 of 39 | <0.1% | $460.2M | $1.13T |
| Pierre, SD (1 branch) | 2 of 6 | 22.0% | $392.2M | $1.78B |
| Huron, SD (3 branches) | 1 of 5 | 58.6% | $356.0M | $607.2M |
| Watertown, SD (1 branch) | 6 of 12 | 8.8% | $159.4M | $1.81B |
| Aberdeen, SD (1 branch) | 5 of 15 | 5.4% | $120.3M | $2.22B |
| Worthington, MN (1 branch) | 9 of 9 | 3.3% | $23.8M | $724.4M |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| Pierre Br | Pierre, SD | 57501 | $392.2M |
| Sioux Falls River Centre Branch | Sioux Falls, SD | 57104 | $253.5M |
| Huron Branch | Huron, SD | 57350 | $217.0M |
| Watertown Branch | Watertown, SD | 57201 | $159.4M |
| De Smet Branch | De Smet, SD | 57231 | $145.0M |
| Aberdeen, South Dakota Branch | Aberdeen, SD | 57401 | $120.3M |
| Miller Branch | Miller, SD | 57362 | $99.8M |
| Wessington Springs Branch | Wessington Springs, SD | 57382 | $85.1M |
| Stickney Br | Stickney, SD | 57375 | $69.7M |
| American Bank & Trust (main office) | Sioux Falls, SD | 57108 | $65.9M |
| Wolsey Branch | Wolsey, SD | 57384 | $53.9M |
| Mellette Branch | Mellette, SD | 57461 | $48.0M |
| Lennox Branch | Lennox, SD | 57039 | $47.3M |
| Tea Sd Branch | Tea, SD | 57064 | $45.7M |
| Iroquois Branch | Iroquois, SD | 57353 | $32.7M |
| Sioux Falls 41st & Sycamore Branch | Sioux Falls, SD | 57110 | $31.3M |
| Carthage Branch | Carthage, SD | 57323 | $28.6M |
| Worthington Minnesota Branch | Worthington, MN | 56187 | $23.8M |
| 26th Street Sioux Falls Sd Branch | Sioux Falls, SD | 57106 | $16.5M |
| Lisbon, Nd Branch | Lisbon, ND | 58054 | $15.8M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 1117) · FFIEC NIC profile (RSSD 275358)