Applications / Mortgage Analytics / Lenders / Wisconsin / Bank of Sun Prairie
Sun Prairie, WI · State non-member bank · FDIC · $726 million assets · 153 loans in 2025
Bank of Sun Prairie's data, $215Buy the data, $2,110Get Jenner, the SAS-compatible software
153
loans originated, 2025
221
applications, 2025
1
states and territories
0
gaps bigger than at similar lenders
Our analysis, 2025
Bank of Sun Prairie makes bigger loans at lower rates than most similar banks, but it made fewer of them in 2025 and lost ground in Madison, its home market.
Its typical loan was $295,000, against $175,000 at similar lenders (state non-member banks making between half and twice as many loans), larger than at nearly nine in ten. Its typical rate was 6.50%, against 6.96%, among the lowest tenth. None of its loans were higher-priced (a rate well above the average for similar loans). All were conventional.
Its loans fell to 153 from 170, while similar lenders and the market as a whole grew 10%. Its dollar volume fell further, to $50.3 million from $84.5 million. It made 680 loans in 2020.
Its share of lending in Madison, WI, where it has lent since at least 1990, fell to 0.6% from 1.5%. It ranks 34 of 380 lenders there; Summit Credit Union and UW Credit Union lead. Its lower dollar volume, possibly from fewer large loans than in 2024, could account for much of the change.
Poorer neighborhoods (low- and moderate-income, or LMI, tracts) took 9.2% of its loans, against 17.6% at peers, a lower share than at more than four in five. Its 17-county footprint in one state may hold few such areas. LMI borrowers took 31.1%, higher than the typical 28.0%.
Similar lenders: same lender type, originations between half and twice the lender's in the data year. Written from the 2025 HMDA data and checked figure by figure against it.
FIG. 1 — LOANS ORIGINATED, 2018–2025
Originated means the loan was made: applications denied, withdrawn or not accepted are not counted. Bank of Sun Prairie took 221 applications in 2025.
SOURCE: FFIEC HMDA, LOANS ORIGINATED (ACTION TAKEN: LOAN ORIGINATED)
FIG. 2 — PRODUCT MIX, 2025
Purchase 64.7% · Refinance 32.0% · Other 2.6% · Home improvement 0.7%
Conventional 100.0% · of 153 loans. Purchase: buying a home. Refinance: replacing an existing mortgage, including cash-out. FHA: insured by the Federal Housing Administration. VA: guaranteed by the Department of Veterans Affairs. Conventional: neither.
SOURCE: FFIEC HMDA 2025, LOANS ORIGINATED
Where it lends, 2025
| State | Loans | Share |
|---|---|---|
| Wisconsin | 153 | 100.0% |
Largest metro areas, 2025
| Metro area | Loans |
|---|---|
| Madison | 109 |
| Janesville-Beloit | 8 |
| Milwaukee-Waukesha | 8 |
Identifiers
| LEI (Legal Entity Identifier, the global company code HMDA has used since 2018) | 6354007NTMKKVRFIIP73 | 2018–2025 |
| RSSD (the Federal Reserve's identifier for banks and their parents) | 124344 | 2004–2023 |
| Respondent ID (the HMDA filer code before 2018) | 313565 | 1990–2017 |
Established 8 August 1903. Reported under HMDA 1990-2025.
Mergers, name changes, data editions and corrections: Bank of Sun Prairie's data.
Bank of Sun Prairie's data
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Bank of Sun Prairie and its peers, 2018–2025: every application in the HMDA data, cleaned and corrected, as Parquet files, with the Jenner programs that made these pages.
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