Personal loans in New Underwood, SD

A single loan can carry different costs on either side of a state line, and New Underwood sits on the South Dakota side of that line. The Census counts 610 people in New Underwood, the 99th-largest figure among South Dakota's 309 places.

By the Personalloaner Editorial Team · Last updated 2026-09-16

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In New Underwood, one of 309 Census places in South Dakota, the figure to compare across lenders is the APR, not the advertised rate. The trend for New Underwood between 2020 and 2023 is upward by roughly 2.9%. Use the calculator on this page to price an amount and term before you commit in New Underwood. The next larger city is Box Elder, SD about 12 miles away.

New Underwood: population, trend and location

What follows is New Underwood's place in the Census record, alongside the South Dakota rules that govern a personal loan made here.

Population: the Census counts 610 residents in New Underwood (Vintage 2023 subcounty estimate), the 99th-largest figure among South Dakota's 309 places.
Population trend: Roughly 2.9% more residents than the 2020 Census counted.
People gained or lost: about 17 more since the 2020 base.
Size percentile: about 68% of South Dakota's Census places are smaller than New Underwood.
Land and density: 1.5 square miles of land carry roughly 420 residents per square mile.
Land area rank: New Underwood's 1.5 square miles rank 67th of 309 places in South Dakota.
Share of state population: New Underwood's 610 residents are about 0.1% of South Dakota.
National standing: New Underwood ranks 12,361st of 19,457 US places.
Growth in South Dakota: New Underwood stands 57th by percentage change from 2020 to 2023, among 309 places.
Versus South Dakota: the state average change is +0.9%, while New Underwood moved 2.9%.
Density in South Dakota: New Underwood ranks 186th by people per square mile.
Density vs South Dakota: New Underwood's 420 people per square mile compare with a state median of 581.
Location: mapped by the US Census Bureau at 44.0986, -102.8403.
Nearest larger cities: Box Elder (12 mi); Rapid City (19 mi); Summerset (26 mi); Piedmont (28 mi); Wall (30 mi). Lenders licensed in the state serve New Underwood whether or not they keep a local branch.
Smaller places close by: Wasta (20 mi); Hermosa (25 mi); Keystone (32 mi).
Smaller neighbours: 9 places smaller than New Underwood sit within 50 miles.
Within 100 miles: 23 places are larger than New Underwood.

Inside a New Underwood personal loan

A New Underwood personal loan is an installment loan: a lump sum, then fixed monthly payments over a set term, priced off your credit rather than its 610 residents. A lender serving New Underwood's 610 residents must disclose the APR and finance charge in writing before you sign. The term you choose in New Underwood decides the split between a comfortable payment and the total interest you pay.

The state rulebook for New Underwood

South Dakota has no separate rate rule for New Underwood; the sourced rows below are what reach every lender that serves its 610 people.

Rule	Detail	Source
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
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

Land, water and location for New Underwood

The Census Gazetteer records about 1.5 square miles of land within New Underwood, with no significant water area listed. With 610 residents, the land area yields roughly 420 people per square mile. The state's population centre of gravity, Sioux Falls, is roughly 307 miles away. Counting outward 50 miles, 11 larger communities surround New Underwood. The 100-mile radius contains 23 larger places.

What is available to New Underwood borrowers

New Underwood is a lightly settled community of about 610 people, with 11 larger places inside a 50-mile radius. Whether New Underwood has a local branch or not, a South Dakota-licensed lender can serve its 610 people online on the same terms. For a larger market, the closest option is Box Elder, SD about 12 miles away.

Before you apply in New Underwood

Before you hand your details to a lender in New Underwood, where the population is near 610:

Pull your credit reports first and correct any error before a lender sees the file.
Model the payment on the calculator before a lender models it for you.
Gather at least three pre-qualified offers and line up the APR, not the headline rate.
Look the lender up in the South Dakota regulator's licence records before you sign.
If debt is already a struggle, talk to a nonprofit credit counsellor before borrowing more.
Check the disclosure for fees that raise the true cost above the quoted rate.
Test the payment against your current bills before you commit.

None of these steps is New Underwood-specific: the same South Dakota licensing and disclosure rules reach all 610 residents.

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Common questions

What are my options in New Underwood if my credit is poor?

Borrowing is still possible, but expect a higher APR and a smaller approved amount. Lenders that accept lower scores hold statewide licences, so what is open to you in New Underwood is the same as anywhere in South Dakota.

What loan size can I expect in New Underwood?

Most personal loans sit somewhere between $1,000 and $50,000, though the figure you are approved for turns on the lender, your income and your credit. Model the monthly payment first with our personal loan calculator.

Do I have to pledge anything to borrow in New Underwood?

For an unsecured personal loan, no — there is nothing to pledge. A secured loan, such as home equity or one secured by a vehicle, does require collateral, and default puts that asset at risk.

Does comparing loans in New Underwood cost me credit score points?

Not during pre-qualification, which normally uses a soft pull and leaves your score alone. Submitting a full application triggers a hard inquiry, which can trim a few points briefly.

Nearby places

Box Elder, SD — population 13,868
Rapid City, SD — population 79,404
Wasta, SD — population 62
Hermosa, SD — population 373
Summerset, SD — population 3,000
Piedmont, SD — population 1,015
Fairburn, SD — population 64
Wall, SD — population 688