Union County
South Dakota · FIPS 46127
According to CFPB HMDA 2024 application volume among U.S. counties, Union County ranks #1,875 of 3,210, and #9 of 65 in South Dakota.
Mortgage lending activity in Union County, South Dakota based on lender filings under the Home Mortgage Disclosure Act (HMDA). Data covers all applications received by HMDA-reporting institutions operating in this county during 2024. Why mortgages get denied walks the denial-reason codes that appear in books like this one.
Local mortgage market. Union County, South Dakota saw 600 HMDA-reported mortgage applications in 2024. Lenders originated 379 of those loans and denied 67, producing a denial rate of 11.2% and an approval (origination) rate of 63.2%. The average loan amount was $260,950 at an average note rate of 7.03%, with applicants self-reporting average annual income of $38K. 80 distinct institutions reported mortgage activity in this county.
Borrower leverage and affordability signal. The loan-to-income ratio averages 6.9x, meaning typical borrowers took on mortgages of about 6.9 times their annual income. That ratio is a rough affordability signal: higher multiples imply tighter monthly budgets and greater exposure to rate or income shocks. See our methodology for how to read the denial rate against a local applicant pool. This page is informational data reporting, not financial, legal, or mortgage advice.
Lender concentration in Union County
In Union County, lead originator Central Bank funded only 10.6% of 379 originated loans, below the county fleet's lower tercile (~10.9% top-1 share). The top three reporters together hold 25.3% of the book, so shopping across channels still meets many active filers.
Counties With Similar Application Volume
Nationwide counties nearest to Union County's 600 HMDA applications.
Counties With a Similar Average Loan
Nationwide counties nearest to Union County's $260,950 average loan (deduped against volume peers).
Lenders active in Union County
Central Bank funded 40 of the 379 loans originated in Union County, 10.6% of the county. 80 lenders reported activity here.
| # | Lender | Originated | Market Share |
|---|---|---|---|
| 1 | Central Bank | 40 | 10.6% |
| 2 | Siouxland Federal Credit Union | 30 | 7.9% |
| 3 | The Security National Bank of Sioux City, Iowa | 26 | 6.9% |
| 4 | Rocket Mortgage | 19 | 5.0% |
| 5 | Plains Commerce Bank | 18 | 4.7% |
Source: Consumer Financial Protection Bureau (CFPB), Home Mortgage Disclosure Act (HMDA) 2024. County FIPS codes per U.S. Census Bureau standards.
Data from FFIEC / CFPB HMDA Snapshot National Loan-Level Dataset (2024). Provided for informational purposes only; does not constitute financial advice for Union County borrowers.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainLender is rendered directly from CFPB HMDA federal source data, no number is typed in by an editor. This Union County page draws directly on CFPB HMDA federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-08-10. HMDA figures are lender-filed application outcomes for a published reporting year - not creditworthiness scores, rate quotes, Loan Estimates, underwriting decisions, or mortgage advice.