NSB Bank
Headquarters: Mason City, Iowa
Overview
NSB Bank is an FDIC-insured bank headquartered in Mason City, Iowa. It reported $478.97M in assets and $415.03M in deposits for the period ending March 31, 2026. Bankular currently lists 6 branch locations.
What Bankular checked
These dates identify the official records and review steps supporting this profile.
Quarterly change
What changed since the previous report
December 31, 2025 to March 31, 2026
These comparisons use consecutive official regulatory reporting periods. A change is descriptive and is not a recommendation or safety rating.
Financial indicators
Capital, profitability and credit quality
These are the latest reported capital, profitability and credit-quality measures available for this institution. Read the figures together rather than as a single safety rating.
Branch footprint
Where NSB Bank has branches
Explore the cities with the most currently listed locations. Branch hours can change, so confirm current lobby, drive-through and appointment hours with the institution before visiting.
Locations
Find a branch of NSB Bank
Forest City Branch
101 Highway 69 N, Forest City, Iowa, 50436
Full-service branch · Opened May 6, 1988
Main Office
2650 4th St SW, Mason City, Iowa, 50401
Full-service branch · Opened January 1, 1933
Northwood Branch
900 Central Ave, Northwood, Iowa, 50459
Full-service branch · Opened June 7, 1999
Regency
451 S Illinois Ave, Mason City, Iowa, 50401
Full-service branch · Opened September 21, 1936
Thompson Branch
11723 Highway 9, Thompson, Iowa, 50478
Full-service branch · Opened February 13, 1998
Titonka Branch
173 Main St N, Titonka, Iowa, 50480
Full-service branch · Opened July 12, 2021
Financial overview
Latest reported figures
Through March 31, 2026
Financial trends
How the balance sheet has changed
Compare recent quarters to see the direction of assets, deposits and loans.
| Quarter | Assets | Deposits | Net loans | ROA |
|---|---|---|---|---|
| March 31, 2026 | $478.97M | $415.03M | $336.38M | 0.81% |
| December 31, 2025 | $468.65M | $400.17M | $341.57M | 1.22% |
| September 30, 2025 | $469.43M | $401.67M | $329.05M | 1.26% |
| June 30, 2025 | $470.50M | $405.28M | $334.08M | 1.17% |
| March 31, 2025 | $469.68M | $405.21M | $326.94M | 1.28% |
| December 31, 2024 | $462.78M | $396.00M | $330.06M | 1.01% |
| September 30, 2024 | $474.65M | $402.23M | $325.29M | 1.01% |
| June 30, 2024 | $449.75M | $380.58M | $318.15M | 1.01% |
Size and reach
How this institution compares
Explore the institution
More on NSB Bank
Use the available Bankular sections to move from institution identity to products, locations, market context and source verification.
Branch locations
6 listed locations.
Explore →Compare this institution
Compare size, financial metrics, rates and access.
Explore →State banking market
Explore institutions and deposit-market context in Iowa.
Explore →Mason City banking market
See local branches, competitors and market concentration.
Explore →Rankings and research
Place this institution in national and market context.
Explore →Sources and methodology
Review the official sources and reporting periods.
Explore →Frequently asked questions
Is NSB Bank federally insured?
Yes. Bankular identifies this institution in FDIC records under certificate 8094.
Where is NSB Bank headquartered?
NSB Bank is headquartered in Mason City, Iowa, at 2650 4th St Sw, Mason City, Iowa, 50401.
How large is NSB Bank?
It reported $478.97M in assets and $415.03M in deposits for the period ending March 31, 2026.
How many locations does NSB Bank have?
Bankular currently lists 6 branch locations for this institution.
Data sources and methodology
Bankular combines official regulatory records with institution-published product information. The detailed sources are available below for readers who want to verify a figure.