Bank Oostburg State Bank
Oostburg State Bank is a federally insured bank based in Oostburg, Wisconsin.
- Type
- Bank
- Charter
- State-chartered commercial bank, not a Federal Reserve member
- Primary regulator
- FDIC
- Established
- March 1, 1908
- Headquarters
- Oostburg, WI
- FDIC certificate #
- 10380
- Fed RSSD ID
- 248745
- Holding company
- Oostburg Bcorp Inc
- Website
- www.oostburgstate.bank
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
Oostburg State Bank operates 4 branch locations in Wisconsin. Select a state to drill down to its towns and individual branches.
Ownership
Oostburg State Bank is owned by Oostburg Bcorp Inc. See the full ownership & merger history.
Oostburg State Bank financial summary
Other banks in Wisconsin
Federally insured banks headquartered in Wisconsin, by total assets.
- Associated Bank, National Association $45.54B
- Nicolet National Bank $15.55B
- Johnson Bank $7.01B
- Bank First, N.A. $6.06B
- Town Bank, National Association $4.52B
- First Business Bank $4.32B
- John Deere Financial, f.s.b. $4.11B
- Lake Ridge Bank $3.33B
Similar-size banks
Institutions close to Oostburg State Bank’s $429.9M in assets.
- Patriot Bank $430.2M
- The First National Bank of Monterey $429.6M
- Watermark Bank $429.6M
- Coffee County Bank $430.4M
- First Electronic Bank $429.3M
- Astra Bank $429.2M