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First National Bank of Gillette Locations & Branches Gillette, Wyoming
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First National Bank of Gillette operates 3 branches from its headquarters in Gillette, WY, . Its main office is at 319 S Gillette Ave, Gillette, WY 82716.
First National Bank of Gillette branch network
All 3 branches are in WYOMING. Its largest office by deposits is its main office in Gillette, WY, with $472.2M (82.8% of its branch deposits). It had the same number of branches on June 30, 2025.
First National Bank of Gillette at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 14.93% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $651.9M
- Tier 1 leverage ratio, Q2 2026
- 14.93%
- Deposit insurance
- FDIC
- Regulator
- OCC
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1963
Full financial profile · Is First National Bank of Gillette safe? · First National Bank of Gillette 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: Gillette, WY (3 branches) | 1 of 9 | 38.6% | $570.0M |
| State: WY (3 branches) | 12 of 44 | 2.6% | $570.0M |
Ranked by total assets among banks headquartered in the state: Largest banks in Wyoming.
Share by county and metro area
First National Bank of Gillette'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 |
|---|---|---|---|---|
| Campbell, WY (3 branches) | 1 of 9 | 38.6% | $570.0M | $1.48B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Gillette, WY (3 branches) | 1 of 12 | 26.6% | $570.0M | $2.14B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| First National Bank of Gillette (main office) | Gillette, WY | 82716 | $472.2M |
| Hwy 59 Branch | Gillette, WY | 82718 | $72.2M |
| R C Ranch Branch | Gillette, WY | 82718 | $25.7M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 18880) · FFIEC NIC profile (RSSD 890050)