Eureka at a glance
- Population: about 773, 81st by size in South Dakota of 309 places (Census Vintage 2023 subcounty estimate).
- 2020 Census base: 809 people at the 2020 Census, the baseline for the trend below (US Census Bureau).
- 2020 to 2023 change: down roughly 4.4% across the 2020-to-2023 comparison (US Census Bureau).
- Rank among South Dakota places: 81st-largest of 309 (US Census Bureau, Vintage 2023 estimate).
- Size percentile: it exceeds roughly 74% of South Dakota's Census places by population (US Census Bureau).
- Coordinates: the Census Gazetteer places it at 45.7712, -99.6207.
- Nearest larger cities: Wishek, ND (34 mi); Ipswich, SD (36 mi); Mobridge, SD (42 mi); Linton, ND (45 mi); Ellendale, ND (55 mi) (Census populations, approximate straight-line distance).
- Smaller towns nearby: Artas, SD (12 mi); Hosmer, SD (15 mi); Venturia, ND (16 mi) (US Census Bureau).
What a personal loan costs in Eureka
Most personal loans are unsecured, meaning no collateral is pledged, and they are repaid in equal installments over a fixed term.
Two loans can share an interest rate and still differ in APR once fees are counted, so compare APR; our personal loan calculator shows the difference over the full term.
Your credit, income and existing debts drive the rate a lender offers, while the term you pick sets how much interest builds on top.
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 Eureka
Read the table as the compliance picture for a lender serving Eureka: label, sourced figure, publisher and date.
| Rule | Detail | Source |
|---|---|---|
| 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 |
| 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 |
How to compare offers in Eureka
These steps are the ones that most affect the offer you receive in Eureka:
- 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.