| Business | Phone |
| American State Bank & Trust 2523 2nd Ave W, Williston 58801 | (701) 774-4102 |
| American State Bank & Trust 319 1st Ave W, Williston 58801 | (701) 774-4104 |
| Us Bank 202 Main St, Williston 58801 | (701) 572-3744 |
| First International Bank 2402 1st Ave W, Williston 58801 | (701) 572-1403 |
| First International Bank-Trust 19 4th St E, Williston 58801 | (701) 774-8321 |
| First International Bank-Trust 300 11th St W, Williston 58801 | (701) 774-9711 |
| First National Bank 1623 2nd Ave W, Williston 58801 | (701) 572-2097 |
| First National Bank & Trust Co 22 4th St E, Williston 58801 | (701) 577-2113 |
| Gate City Bank 422 Main St, Williston 58801 | (701) 572-8103 |