Bank Branches › Montana › Fergus County › 401 W Main St
Full-service office · FDIC office no. 15837
Bank of The Rockies
401 W Main St, Lewistown, MT 59457
Open · June 2026
$31.6M
deposits, 2026
1978
established
4th
of 7 in county
3
names on the sign
| Date | Bank on the sign | Deposits | Change |
|---|---|---|---|
| Jun 30 2026 | Bank of The Rockies | $31.6M | +3% |
| Jun 30 2025 | Bank of The Rockies | $30.6M | +9% |
| Jun 30 2024 | Bank of The Rockies | $28.1M | 0% |
| Jun 30 2023 | Bank of The Rockies | $28.1M | −21% |
| Jun 30 2022 | Bank of The Rockies | $35.5M | +22% |
| Jun 30 2021 | Bank of The Rockies | $29.0M | +18% |
| Jun 30 2020 | Bank of The RockiesNEW NAME | $24.5M | +13% |
| Jun 30 2019 | Bank of The Rockies, National Association | $21.7M | −6% |
| Jun 30 2018 | Bank of The Rockies, National Association | $23.2M | −4% |
| Jun 30 2017 | Bank of The Rockies, National Association | $24.2M | +4% |
| Jun 30 2016 | Bank of The Rockies, National Association | $23.1M | +1% |
| Jun 30 2015 | Bank of The Rockies, National Association | $22.9M | +7% |
| Jun 30 2014 | Bank of The Rockies, National Association | $21.5M | −2% |
| Jun 30 2013 | Bank of The Rockies, National Association | $21.8M | −11% |
| Jun 30 2012 | Bank of The Rockies, National Association | $24.6M | −17% |
| Jun 30 2011 | Bank of The Rockies, National Association | $29.6M | +29% |
| Jun 30 2010 | Bank of The Rockies, National Association | $23.0M | −4% |
| Jun 30 2009 | Bank of The Rockies, National Association | $24.0M | −11% |
| Jun 30 2008 | Bank of The Rockies, National Association | $27.0M | 0% |
| Jun 30 2007 | Bank of The Rockies, National AssociationNEW NAME | $26.9M | −10% |
| Jun 30 2006 | Western Security Bank | $30.0M | +25% |
| Jun 30 2005 | Western Security Bank | $24.0M | −11% |
| Jun 30 2004 | Western Security Bank | $27.0M | −10% |
| Jun 30 2003 | Western Security Bank | $30.1M | +14% |
| Jun 30 2002 | Western Security Bank | $26.5M | −20% |
| Jun 30 2001 | Western Security Bank | $33.0M | |
| 1978-07-17 | Office established (FDIC record) — 23 years before this passbook begins | ||
Nearest other open offices in Fergus County
- <0.1 miWells Fargo Bank, National Association · 404 W Broadway St, Lewistown
- 0.1 miGlacier Bank · 224 W Main St, Lewistown
- 0.2 miGlacier Bank · 205 West Broadway, Lewistown
- 1.0 miStockman Bank of Montana · 1716 W Main St, Lewistown
- 30.3 miOpportunity Bank of Montana · 423 Broadway Ave, Denton
- 34.2 miOpportunity Bank of Montana · 205 Main St, Number 2, Winifred
All banks in Fergus County →
Every Bank of The Rockies office →
Earlier names and banks folded into Bank of The Rockies →
Names on the sign
2001–2006Western Security Bank2007–2019Bank of The Rockies, National Association2020–nowBank of The Rockies
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) 15837.