Groton at a glance
- Population: about 1,355, 44th by size in South Dakota of 309 places (Census Vintage 2023 subcounty estimate).
- 2020 Census base: 1,388 people counted in the 2020 Census (US Census Bureau).
- 2020 to 2023 change: population fell about 2.4% (US Census Bureau Vintage 2023 estimate vs 2020 Census).
- Rank among South Dakota places: 44th in population of 309 places (US Census Bureau).
- Size percentile: it exceeds roughly 86% of South Dakota's Census places by population (US Census Bureau).
- Coordinates: the Census Gazetteer places it at 45.4517, -98.1001.
- Nearest larger cities (within 120 miles): Aberdeen, SD (18 mi); Webster, SD (29 mi); Redfield, SD (45 mi); Oakes, ND (48 mi); Sisseton, SD (53 mi) (US Census Bureau populations).
- Nearest smaller communities: Andover, SD (10 mi); Pierpont, SD (13 mi); Stratford, SD (14 mi), each a US Census place.
What a personal loan costs in Groton
Unlike a revolving credit card, a personal loan is closed-end: the balance falls on a fixed schedule and the payment does not change.
APR, not the simple interest rate, reflects what the loan actually costs once fees are included; the personal loan calculator puts a figure on it.
Your credit, income and existing debts drive the rate a lender offers, while the term you pick sets how much interest builds on top.
Shop with more than one lender and treat pre-qualification as an estimate, since the final terms follow a full application.
South Dakota lending rules that apply in Groton
The table lists the South Dakota rules that apply to a loan made in Groton, each with the regulator that published it.
| Rule | Detail | Source |
|---|---|---|
| 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 |
| 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 |
How to compare offers in Groton
These steps are the ones that most affect the offer you receive in Groton:
- 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.