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Bankular
Local banking directory

Banks and Bank Branches in Williston, North Dakota

The FDIC reported 9 deposit-reporting offices from 5 institutions in Williston as of June 30, 2025. Bankular currently provides 11 detailed location pages with addresses, maps and directions.

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FDIC-reported offices9
Institutions reporting5
Detailed location pages11
Reported branch deposits$1.64B
SOD reporting dateJune 30, 2025

Reported-office totals come from the annual FDIC Summary of Deposits survey. Maps and branch-detail links appear only for locations with a validated Bankular location page.

Market analysis

What the deposit data shows

FDIC SOD, June 30, 2025
Largest institutionAmerican State Bank & Trust Company of Williston34.64% of deposits
Top three share78.08%
Deposit HHI2,451Moderate concentration
Current detailed pages112 more than the June 2025 SOD count

American State Bank & Trust Company of Williston held 34.64% of reported branch deposits in Williston. The three largest institutions together held 78.08%. Bankular places the resulting HHI of 2,451 in its moderate concentration descriptive band.

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Detailed bank locations in Williston

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Detailed directory

Institutions with validated location pages

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Detailed bank locations in Williston

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Local deposit market

Reported offices, deposits and market share

FDIC SOD, June 30, 2025
InstitutionReported officesDepositsShare
American State Bank & Trust Company of Williston2$568.9M34.64%
First International Bank & Trust2$407.0M24.78%
First State Bank & Trust2$306.6M18.67%
Gate City Bank2$261.5M15.92%
U.S. Bank1$98.5M6.00%