Bank Branches › Montana › Gallatin County › 320 S Main St
Full-service office · FDIC office no. 12226
Glacier Bank
320 S Main St, Three Forks, MT 59752
Open · June 2026
$44.8M
deposits, 2026
1960
established
30th
of 41 in county
4
names on the sign
| Date | Bank on the sign | Deposits | Change |
|---|---|---|---|
| Jun 30 2026 | Glacier Bank | $44.8M | −8% |
| Jun 30 2025 | Glacier Bank | $48.9M | −6% |
| Jun 30 2024 | Glacier Bank | $52.1M | 0% |
| Jun 30 2023 | Glacier Bank | $51.9M | −10% |
| Jun 30 2022 | Glacier Bank | $57.5M | +12% |
| Jun 30 2021 | Glacier Bank | $51.2M | +33% |
| Jun 30 2020 | Glacier Bank | $38.6M | +21% |
| Jun 30 2019 | Glacier Bank | $32.0M | −2% |
| Jun 30 2018 | Glacier BankNEW NAME | $32.7M | +2% |
| Jun 30 2017 | First Security Bank | $32.0M | +8% |
| Jun 30 2016 | First Security Bank | $29.6M | +3% |
| Jun 30 2015 | First Security Bank | $28.7M | +6% |
| Jun 30 2014 | First Security Bank | $27.2M | +2% |
| Jun 30 2013 | First Security Bank | $26.5M | −1% |
| Jun 30 2012 | First Security Bank | $26.8M | +10% |
| Jun 30 2011 | First Security Bank | $24.3M | −3% |
| Jun 30 2010 | First Security Bank | $25.1M | +4% |
| Jun 30 2009 | First Security Bank | $24.2M | +10% |
| Jun 30 2008 | First Security Bank | $22.1M | +2% |
| Jun 30 2007 | First Security Bank | $21.5M | −20% |
| Jun 30 2006 | First Security Bank | $27.0M | +8% |
| Jun 30 2005 | First Security Bank | $25.1M | +7% |
| Jun 30 2004 | First Security Bank | $23.5M | +28% |
| Jun 30 2003 | First Security Bank | $18.3M | +9% |
| Jun 30 2002 | First Security BankNEW NAME | $16.8M | +9% |
| Jun 30 2001 | First Security Bank, Bozeman, MontanaNEW NAME | $15.5M | +12% |
| Jun 30 2000 | Security Bank of Three Forks | $13.8M | +8% |
| Jun 30 1999 | Security Bank of Three Forks | $12.8M | +9% |
| Jun 30 1998 | Security Bank of Three Forks | $11.8M | −1% |
| Jun 30 1997 | Security Bank of Three Forks | $11.8M | +7% |
| Jun 30 1996 | Security Bank of Three Forks | $11.1M | +7% |
| Jun 30 1995 | Security Bank of Three Forks | $10.3M | +4% |
| Jun 30 1994 | Security Bank of Three Forks | $9.9M | |
| 1960-11-14 | Office established (FDIC record) — 34 years before this passbook begins | ||
Nearest other open offices in Gallatin County
- 0.3 miOpportunity Bank of Montana · 120 S Montana St, Three Forks
- 0.3 miManhattan Bank · 2 Railway Ave, Three Forks
- 10.8 miStockman Bank of Montana · 100 E Wooden Shoe Ln, Manhattan
- 10.8 miManhattan Bank · 124 S Broadway St, Manhattan
- 14.9 miManhattan Bank · 7175 Churchill Rd, Manhattan
- 19.4 miGlacier Bank · 511 W Main St, Belgrade
- 19.7 miFlanagan State Bank · 11 West Main Street, Suite 104B, Belgrade
- 19.8 miFirst Interstate Bank · 98 N Broadway, Belgrade
All banks in Gallatin County →
Every Glacier Bank office →
Earlier names and banks folded into Glacier Bank →
Names on the sign
1994–2000Security Bank of Three Forks2001–2001First Security Bank, Bozeman, Montana2002–2017First Security Bank2018–nowGlacier Bank
The FDIC office number stays with the building when banks merge or rename, so the same office appears under each owner. Follow an earlier name to see what became of that bank.
Deposits are the balances the bank assigned to this office on June 30 of each year, in nominal dollars. Source: FDIC Summary of Deposits, office (UNINUMBR) 12226.