Total Assets
$841.2M
Total Deposits
$719.5M
Branches
4
Established
1903
Bank of Sun Prairie is a bank headquartered in Sun Prairie, Wisconsin, established in 1903. It holds $841.2M in total assets across 4 branch locations. In our editorial opinion, based on public FDIC/NCUA data, Bank of Sun Prairie earns a TFS Financial Health Grade of B- (73.3/100) — our editorial assessment, not an official rating or financial advice.
TFS Health Grade
73.3 / 100
Good financial health
How we gradeTFS Health Grades are our editorial opinion based on public FDIC/NCUA data — not an official rating, not financial advice.
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Financial data through June 30, 2026. Updated by TFS August 28, 2026. Data sourced from FDIC BankFind Suite as of 2026-Q2. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
Data sourced from CFPB Consumer Complaint Database. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
| Branch | Address | City | State | Type |
|---|---|---|---|---|
| Bank of Sun PrairieHQ | 228 E Main St | Sun Prairie | WI | 11 |
| Bank of Sun Prairie | 419 W Cottage Grove Rd | Cottage Grove | WI | 11 |
| Bank of Sun Prairie | 695 S Grand Ave | Sun Prairie | WI | 11 |
| Bank of Sun Prairie | 2850 Ironwood Dr | Sun Prairie | WI | 29 |
Data sourced from FDIC BankFind Suite. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
Data sourced from FDIC Enforcement Decisions and Orders / NCUA. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
TFS Financial Health Grades represent our editorial assessment based on publicly available data and our proprietary methodology. They do not represent financial advice or an official government rating. Data on this page is sourced from federal government databases and is believed to be accurate.
Benchmarked against 60 active, federally insured banks reporting in the same quarter and holding roughly 0.5×–2× its assets. Same-state and overlapping-market peers are prioritized.
TFS health score
73.3
Tier 1 capital ratio
9.99%
Return on assets
0.63%
Non-performing loans
0.07%
Efficiency ratio
77.90%
Asset growth (YoY)
16.43%
Suggested direct comparisons
Brookfield, WI
$7.7B
Complaint percentiles are intentionally withheld while TFS audits CFPB company matching and import coverage. Peer conclusions use complete same-quarter regulatory metrics only.