Bank Branches › Iowa › Cerro Gordo County › 451 S Illinois Ave
Full-service office · FDIC office no. 276986
NSB Bank
451 S Illinois Ave, Mason City, IA 50401
Open · June 2026
$22.3M
deposits, 2026
1936
established
14th
of 17 in county
2
names on the sign
| Date | Bank on the sign | Deposits | Change |
|---|---|---|---|
| Jun 30 2026 | NSB Bank | $22.3M | +13% |
| Jun 30 2025 | NSB Bank | $19.8M | −4% |
| Jun 30 2024 | NSB Bank | $20.5M | −10% |
| Jun 30 2023 | NSB Bank | $22.7M | −16% |
| Jun 30 2022 | NSB Bank | $27.1M | +2% |
| Jun 30 2021 | NSB Bank | $26.7M | +16% |
| Jun 30 2020 | NSB Bank | $23.1M | +12% |
| Jun 30 2019 | NSB Bank | $20.7M | +8% |
| Jun 30 2018 | NSB Bank | $19.1M | −7% |
| Jun 30 2017 | NSB Bank | $20.5M | −8% |
| Jun 30 2016 | NSB Bank | $22.1M | +13% |
| Jun 30 2015 | NSB Bank | $19.5M | +1% |
| Jun 30 2014 | NSB Bank | $19.2M | −1% |
| Jun 30 2013 | NSB BankNEW NAME | $19.5M | 0% |
| Jun 30 2012 | Northwoods State Bank | $19.4M | +18% |
| Jun 30 2011 | Northwoods State Bank | $16.4M | +15% |
| Jun 30 2010 | Northwoods State Bank | $14.2M | +10% |
| Jun 30 2009 | Northwoods State Bank | $12.9M | −4% |
| Jun 30 2008 | Northwoods State Bank | $13.5M | −21% |
| Jun 30 2007 | Northwoods State Bank | $17.1M | +22% |
| Jun 30 2006 | Northwoods State Bank | $14.1M | −14% |
| Jun 30 2005 | Northwoods State Bank | $16.3M | +28% |
| Jun 30 2004 | Northwoods State Bank | $12.7M | +6% |
| Jun 30 2003 | Northwoods State Bank | $12.0M | −1% |
| Jun 30 2002 | Northwoods State Bank | $12.1M | +46% |
| Jun 30 2001 | Northwoods State Bank | $8.3M | −1% |
| Jun 30 2000 | Northwoods State Bank | $8.4M | −19% |
| Jun 30 1999 | Northwoods State Bank | $10.4M | +6% |
| Jun 30 1998 | Northwoods State Bank | $9.8M | +7% |
| Jun 30 1997 | Northwoods State Bank | $9.1M | −4% |
| Jun 30 1996 | Northwoods State Bank | $9.6M | −11% |
| Jun 30 1995 | Northwoods State Bank | $10.7M | +13% |
| Jun 30 1994 | Northwoods State Bank | $9.4M | |
| 1936-09-21 | Office established (FDIC record) — 58 years before this passbook begins | ||
Nearest other open offices in Cerro Gordo County
- 1.5 miClear Lake Bank and Trust Company · 100 E State St, Mason City
- 1.5 miFirst Citizens Bank · 33 E State St, Mason City
- 1.5 miFarmers State Bank · 517 S Federal Ave, Mason City
- 1.7 miWells Fargo Bank, National Association · 10 N Washington Ave, Mason City
- 1.7 miU.S. Bank National Association · 124 N Washington Ave, Mason City
- 3.4 miFarmers State Bank · 2501 4th St Sw, Mason City
- 3.5 miFirst Citizens Bank · 2601 4th St Sw, Mason City
- 3.5 miNSB Bank · 2650 4th St Sw, Mason City
All banks in Cerro Gordo County →
Every NSB Bank office →
Earlier names and banks folded into NSB Bank →
Names on the sign
1994–2012Northwoods State Bank2013–nowNSB 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) 276986.