Refinance lenders in South Dakota
Fat Boy Data analyzed mortgage refinance activity in South Dakota to show which lenders are making these loans, how often they approve, how often borrowers accept the offer, and how much they typically finance. 2,618 applications were decided by 136 lenders between 2023 and 2025.
South Dakota at a glance
How South Dakota compares
What the data shows
Black Hills Federal Credit Union made the most mortgage refinances in South Dakota, 244 of them.
CorTrust Bank National Association approved the highest share of applications among lenders with at least 20 decisions here, 99% of 94.
Lenders approved 82.4% of mortgage refinance applications in South Dakota, 5.9 percentage points above the the United States rate of 76.5%.
The typical mortgage refinance here is $215K, 27% smaller than the the United States typical of $295K.
Each dot is one lender, placed at its approval rate. Hover for the sample size; the 5 largest lenders are named, the rest are behind the unlock.
Refinance lenders in South Dakota
| Lender | Approval | Approved | Taken up | Typical loan | Loans made | |
|---|---|---|---|---|---|---|
| 1 | Black Hills Federal Credit Union | 78% | 252 / 322 | 97% | $105K | 244 |
| 2 | First PREMIER Bank | 84% | 213 / 254 | 95% | $105K | 203 |
| 3 | Plains Commerce Bank | 85% | 184 / 217 | 99% | $215K | 183 |
| 4 | First Bank & Trust | 84% | 97 / 116 | 100% | $95K | 97 |
| 5 | First Interstate Bank | 83% | 96 / 115 | 99% | $65K | 95 |
Ranked by lending volume. Approval is the share of decided applications a lender approved; taken up is the share of approvals borrowers accepted. Lenders with fewer than 20 decisions are marked as a limited sample and never used for a “highest approval” claim.How the numbers work.
Fat Boy found 131 more lenders.
One email unlocks every lender Fat Boy found.
You are seeing the 5 largest mortgage refinance lenders in South Dakota. Unlock the full market: every lender that decided one of these loans here, what they approved, how much borrowers took, and how close the nearest office is.
- Every lender in the market
- Approval rate and borrower take-up
- Typical loan size and range
- Nearest office and distance
- Branch count and application options
- How easy each lender is to reach
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