Bank of Sun Prairie
Headquarters: Sun Prairie, Wisconsin
Overview
Bank of Sun Prairie is an FDIC-insured bank headquartered in Sun Prairie, Wisconsin. It reported $716.61M in assets and $587.55M in deposits for the period ending March 31, 2026. Bankular currently lists 8 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 Bank of Sun Prairie 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 Bank of Sun Prairie
Antigo Branch
100 S Superior St, Antigo, Wisconsin, 54409
Full-service branch · Opened October 15, 1990
Address and directions →Banner Banks
416 Main St, Birnamwood, Wisconsin, 54414
Full-service branch · Opened May 3, 2026
Address and directions →Cottage Grove Branch
419 W Cottage Grove Rd, Cottage Grove, Wisconsin, 53527
Full-service branch · Opened October 18, 2004
Grand Avenue Office
695 S Grand Ave, Sun Prairie, Wisconsin, 53590
Full-service branch · Opened October 19, 2015
Hatley Branch
410 State Road, Hatley, Wisconsin, 54440
Full-service branch · Opened November 2, 1945
Address and directions →Main Office
228 E Main St, Sun Prairie, Wisconsin, 53590
Full-service branch · Opened August 8, 1903
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 | $716.61M | $587.55M | $582.69M | 0.43% |
| December 31, 2025 | $726.48M | $608.29M | $580.10M | 0.49% |
| September 30, 2025 | $728.56M | $604.24M | $604.77M | 0.44% |
| June 30, 2025 | $722.46M | $613.00M | $601.60M | 0.36% |
| March 31, 2025 | $732.96M | $623.87M | $604.37M | 0.27% |
| December 31, 2024 | $741.96M | $652.83M | $616.42M | 0.30% |
| September 30, 2024 | $768.74M | $645.83M | $639.87M | 0.27% |
| June 30, 2024 | $748.43M | $583.40M | $637.91M | 0.32% |
Size and reach
How this institution compares
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More on Bank of Sun Prairie
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Branch locations
8 listed locations.
Explore →Compare this institution
Compare size, financial metrics, rates and access.
Explore →State banking market
Explore institutions and deposit-market context in Wisconsin.
Explore →Sun Prairie banking market
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Explore →Rankings and research
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Explore →Sources and methodology
Review the official sources and reporting periods.
Explore →Frequently asked questions
Is Bank of Sun Prairie federally insured?
Yes. Bankular identifies this institution in FDIC records under certificate 13565.
Where is Bank of Sun Prairie headquartered?
Bank of Sun Prairie is headquartered in Sun Prairie, Wisconsin, at 228 E Main St, Sun Prairie, Wisconsin, 53590.
How large is Bank of Sun Prairie?
It reported $716.61M in assets and $587.55M in deposits for the period ending March 31, 2026.
How many locations does Bank of Sun Prairie have?
Bankular currently lists 8 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.