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First Northern Bank of Wyoming Locations & Branches Buffalo, Wyoming
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First Northern Bank of Wyoming operates 5 branches from its headquarters in Buffalo, WY, . Its main office is at 141 S Main St, Buffalo, WY 82834.
First Northern Bank of Wyoming branch network
All 5 branches are in WYOMING, across 5 cities. Its largest office by deposits is its main office in Buffalo, WY, with $416.3M (47.9% of its branch deposits). It had the same number of branches on June 30, 2025.
First Northern Bank of Wyoming at a glance
Its CET1 capital ratio was 10.79% at Q2 2026, above regulatory requirements.
- Total assets, Q2 2026
- $982.6M
- CET1 ratio, Q2 2026
- 10.79%
- Deposit insurance
- FDIC
- Regulator
- Federal Reserve
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1885
Full financial profile · Is First Northern Bank of Wyoming safe? · First Northern Bank of Wyoming 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: Buffalo, WY (1 branch) | 1 of 4 | 62.8% | $416.3M |
| State: WY (5 branches) | 9 of 44 | 3.9% | $869.8M |
Ranked by total assets among banks headquartered in the state: Largest banks in Wyoming.
Share by county and metro area
First Northern Bank of Wyoming'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 |
|---|---|---|---|---|
| Johnson, WY (1 branch) | 1 of 4 | 62.8% | $416.3M | $663.1M |
| Weston, WY (1 branch) | 1 of 3 | 48.0% | $146.8M | $306.1M |
| Sheridan, WY (1 branch) | 3 of 11 | 10.5% | $145.4M | $1.38B |
| Campbell, WY (1 branch) | 5 of 9 | 6.8% | $100.5M | $1.48B |
| Converse, WY (1 branch) | 2 of 5 | 5.4% | $60.8M | $1.13B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Gillette, WY (2 branches) | 4 of 12 | 11.6% | $247.3M | $2.14B |
| Sheridan, WY (1 branch) | 3 of 11 | 10.5% | $145.4M | $1.38B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| First Northern Bank of Wyoming (main office) | Buffalo, WY | 82834 | $416.3M |
| Newcastle Branch | Newcastle, WY | 82701 | $146.8M |
| Sheridan Branch | Sheridan, WY | 82801 | $145.4M |
| Gillette Branch | Gillette, WY | 82716 | $100.5M |
| Douglas Branch | Douglas, WY | 82633 | $60.8M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 2208) · FFIEC NIC profile (RSSD 868956)