Interior at a glance
- Population: roughly 66 people; 254th of 309 places in South Dakota (Census Vintage 2023 subcounty estimate).
- 2020 Census base: 67 residents (US Census Bureau, 2020 Census).
- 2020 to 2023 change: population fell about 1.5% (US Census Bureau Vintage 2023 estimate vs 2020 Census).
- Rank among South Dakota places: 254th-largest of 309 (US Census Bureau, Vintage 2023 estimate).
- Size percentile: ahead of around 18% of South Dakota places in population terms (US Census Bureau).
- Coordinates: the Census Gazetteer places it at 43.7273, -101.9833.
- Nearest larger cities (120-mile radius): Wall, SD (23 mi); Kadoka, SD (25 mi); Philip, SD (27 mi); Martin, SD (40 mi); Batesland, SD (42 mi) (US Census Bureau).
- Nearest smaller towns: Cottonwood, SD (17 mi); Quinn, SD (19 mi); Wasta, SD (33 mi) (US Census Bureau).
What a personal loan costs in Interior
Personal loans are closed-end installment debt, so the monthly payment and the payoff date are known from the start.
Compare every quote on APR because it includes the fees the interest rate hides, and check the payment with our personal loan calculator.
The term is the lever: extend it and the payment falls while total interest climbs; shorten it and the reverse happens.
Before you borrow, decide what the loan is for and whether the monthly payment fits a budget you can already meet without taking on new debt.
South Dakota lending rules that apply in Interior
Each row below is a South Dakota rule with its publisher and the date it was retrieved.
| Rule | Detail | Source |
|---|---|---|
| Maximum legal interest rate (usury cap) | No general maximum/usury restriction when the rate is set by written agreement; specific caps elsewhere in the code apply (e.g., 36% for licensed money lenders). Source says: "no maximum interest rate or charge, or usury rate restriction... if they establish the interest rate or charge by written agreement" (SDCL 54-3-1.1). | South Dakota Legislature (South Dakota Codified Laws) as of 2026-09-16 |
| Payday lending status | Legal for licensed money lenders (including payday and title lenders) but capped at 36% APR including all fees and charges; violations are a Class 1 misdemeanor and loans are void. Source says: "no licensee may contract for or receive finance charges pursuant to a loan in excess of an annual rate of thirty-six percent" (SDCL 54-4-44); "A violation of this section is a Class 1 misdemeanor. Any loan made in violation of this section is void and uncollectible" (54-4-44). | South Dakota Legislature (South Dakota Codified Laws) as of 2026-09-16 |
| Small-loan / installment lender licensing | Money Lender license (SDCL ch. 54-4) required for anyone lending money or creating/holding/purchasing retail installment contracts; payday and title lenders are licensed as money lenders. Source says: "to be a Money Lender and subject to the licensing requirements of South Dakota Codified Laws (SDCL) Chapter 54-4"; "Payday and title lenders are also licensed as Money Lenders under SDCL Chapter 54-4." | South Dakota Division of Banking (Department of Labor and Regulation) as of 2026-09-16 |
| State lending regulator | South Dakota Division of Banking (Department of Labor and Regulation) Source says: "The Division of Banking is charged with the regulation and supervision of state chartered and licensed financial institutions." | South Dakota Division of Banking (Department of Labor and Regulation) as of 2026-09-16 |
| Initiated Measure 21 anti-evasion rule (state-specific rule) | Initiated Measure 21 (2016) also bars evasion by indirect means; applies to loans originated, refinanced, rolled over, renewed or flipped after November 15, 2016. Source says: "prohibits these money lenders from evading this rate limitation by indirect means... a loan made in violation of this measure is void" (Division of Banking guidance on Initiated Measure 21). | South Dakota Division of Banking (Department of Labor and Regulation) as of 2026-09-16 |
How to compare offers in Interior
A few practical steps will make the process in Interior less costly:
- Pull your free credit reports and dispute any error — it is the cheapest way to improve the rate you are offered.
- Run your figures through the personal loan calculator on this site so you know the payment before a lender quotes one.
- Pre-qualify with at least three lenders and compare the APR, not the interest rate.
- Check that the lender is licensed in South Dakota using the regulator named above.
- Read the disclosure for origination fees and any prepayment penalty before you sign.