FDIC-insured bank
American State Bank & Trust Company of Williston — Williston, ND
Bank headquartered in Williston, North Dakota, part of AMERICAN STB HOLDING CO INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 223 Main St Williston, ND 58801 |
| County | Williams |
| Metro area | Williston, ND |
| Website | www.asbt.bank |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 15444 |
| Federal Reserve RSSD ID | 244251 |
| Status | Active |
| Charter class | NM (STATE) |
| Holding company | AMERICAN STB HOLDING CO INC |
| Domestic offices | 2 |
| Financials as of | June 30, 2026 |
How to find your American State Bank & Trust Company of Williston 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.asbt.bank.
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Offices nearest to headquarters
| American State Bank & Trust Company Of Williston main office Williston, ND |
223 Main St, 58801 |
| North Branch Williston, ND |
2523 2nd Ave W, 58801 |
Where American State Bank & Trust Company of Williston has offices
Cities with the most American State Bank & Trust Company of Williston offices
Other banks headquartered in Williston
| First State Bank & Trust | $542.57 million |
Largest banks headquartered elsewhere in North Dakota
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| Alerus Financial, National Association Grand Forks | $5.28 billion |
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| First Western Bank & Trust Minot | $2.39 billion |
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