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Interior, SD
South Dakota›Jackson County

InteriorSD

A town of 63, settled in 1894.

Photo: Jared Winkler · CC BY-SA 4.0
Photo of Interior

Interior, SD · Photo: Jared Winkler · CC BY-SA 4.0 · Source ↗

Is Interior a good place to live?

The biggest park or preserve is Buffalo Gap National Grassland, at 40 acres. Interior has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

63 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns
Unknown Correspondent, Interior, South Dakota, to J.J. Dunken [Duncan]
Unknown Correspondent, Interior, South Dakota, to J.J. Dunken [Duncan], 1913
Interior’s story

132 years in pictures

Census counts: 144 in 1930, a peak of 182 in 1940, 65 in 2020. The archive holds 12 old photos and papers going back to 1913 and 3 maps from 1950 on.

  • 1894Interior is settled
Explore the history →
Nearby attractions

Badlands National Park and 1 more within 40 miles

Museums, parks, gardens and other places to visit around Interior. Close and well known come first.

All 3 attractions →
Sources: National Park Service · ski areas © OpenSkiMap / OpenStreetMap contributors · Wikidata · Wikipedia readership · photos via Wikimedia Commons
Photo credits

Badlands National Park: Martin Kraft, CC BY-SA 3.0 · Minuteman Missile National Historic Site: Spencer, CC BY-SA 3.0

Getting set up

Moving to Interior: who provides what

Who provides power, water and the rest in Interior, and how to reach them.

The full setup list →
PowerWest River Electric Assn15.2¢/kWh · EIA 2025HIFLD · EIA
Internet1 providers100% of addresses get 100/20 MbpsFCC
Trash & dumpNot on file yetWe don’t have Interior’s trash rules yet
SchoolsKadoka School District 35-2Which school depends on your addressNCES
Register to voteIn personSouth Dakota has no online registration; you can register in person until 15 days before Election Day or by mail (received 15 days before).vote.gov
Who runs elections hereJackson County AuditorJackson County; contacts on the Handbook page.FVAP, Jul 2023
ZIP code5775057750 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.

The data

Ordered by what stands out in Interior.

Climate

A typical July afternoon in Interior is hotter than in the typical South Dakota or U.S. town

Summers in Interior are warm, and winters cold, snowy, with very little rain. July afternoons reach 90°, January nights drop to 12° and about 38 inches of snow falls in a winter.

38″snow a winter

Typical low → high °F

Winter14–37°
Spring34–60°
Summer58–86°
Fall36–63°
Oct 7
typical first frost
May 5
typical last frost
+1.3°
vs. the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Schools

The schools Interior’s kids attend

The Kadoka Area School District 35-2 runs its public schools. Its one school is below.

SchoolLevelStudentsLetter
Interior Elementary - 09Largest public elementary schoolGrades K–8Grades K–815–

NCES · EDFacts

Health

A larger share of adults say their health is fair or poor in Interior than in most of South Dakota or the rest of the country

Of the 36 South Dakota towns we compare, none has a higher share of adults who report frequent physical distress than Interior, and on top of that just over a fifth of adults report frequent mental distress here. Also worth knowing: in Interior, 29% of adults smoke cigarettes, against 14% in South Dakota’s towns and 14% across U.S. towns. This South Dakota town does better than the South Dakota average on 1 of 26 CDC measures and worse on 17.

InteriorSouth Dakota townsU.S. towns
Fair or poor health (CDC PLACES)31%16%19%
Smoke cigarettes (CDC PLACES)29%14%14%
Diabetes (CDC PLACES)19%10%12%
Frequent physical distress (CDC PLACES)19%12%14%
26 measures vs. South Dakota
1 better8 too close to call17 worse
What stands outInteriorSD
Fewer adults who have had cancer8%9.2%
More older adults who have lost all their teeth25.7%12.7%
Hans P Peterson Memorial Hospital - Cah
26.4 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

Natural hazards

Natural hazards: high risk in Interior, mostly inland flooding

One declared disaster, in 2019, has brought federal aid to Interior households. Compared with 60% of U.S. communities, expected storm and flood damage here is higher. FEMA puts 45% of the town’s expected hazard losses down to inland flooding, and 17% to cold waves.

60risk score of 100
FEMA risk score
60High riskLowerHigher
Inland floodingCold wavesWildfire
1
federal disasters paid out here

FEMA disaster declarations and aid · FEMA National Risk Index · OpenFEMA

4.7%
conserved · 40 of 851 acres
0.0 mi
of trails · 0 per sq mi
Biggest places to walkTrailsAcres
1. Buffalo Gap National Grassland—40

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

Keep exploring

Everything we know about Interior

17pages on Interior
After high school

Colleges nearby

None within 15 miles of Interior; the nearest are

About Interior

Town in South Dakota, United States

Interior (Lakota: makȟóšiča otȟúŋwahe; "Badlands village") is a town in Jackson County, South Dakota, United States. The population was 65 at the 2020 census. Interior got its start in 1907 when the Milwaukee Railroad was extended to that point.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Established
1907
Area
1.3 sq mi
Elevation
2,382 ft
ZIP code
57750
Area code
605

Questions about Interior

Short answers, built from the data on this page.

Is Interior, SD a good place to live?

Interior has fewer than 1,000 residents, too few for fair grades; the figures below are still real.