Plankinton, colloquially known as Plank, is a city in and the county seat of Aurora County, South Dakota, United States. The population was 781 at the 2020 census.

Official town website ↗

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

Town numbers

ZIP code57368

Area code605

Living in Plankinton

Work & commute in Plankinton

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Most working residents leave Plankinton for work: only 12% work in town. The top destinations are Mitchell (18%), Sioux Falls (9%) and Plankinton (7%). Half commute less than 22 miles.

Mitchell

18%

Sioux Falls

Plankinton

White Lake

12%Work in townlive and work in Plankinton 22 miWhere do people commute?the commute map 228Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Plankinton →

Health in Plankinton

Compared with South Dakota

1better than SD·1worse

of 26 measures CDC estimates. The other 24 are too close to call.

Conditions 1▲ 11 close Habits all close Care 1▼ 6 close Mind all close

BetterToo close to callWorse

What stands out

9.4%Fewer older adults who have lost all their teethSD 12.7% · better 11.8%More uninsured adultsSD 8.8% · worse

Care nearby

Avera Queen of PeaceMitchell · 23.8 mi · ER · rural critical access

Horizon Health - Plankinton Medical and DentalPlankinton · 0.1 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Plankinton · CMS · HRSAHealth in Plankinton →

Natural hazards in Plankinton

Moderate

Expected storm and flood damage is higher than in 48% of U.S. communities.

🥶 Cold waves🌊 Inland flooding🌵 Drought

2Does Plankinton flood?paid flood claims since 2019 6Disasters that paid out herefederal disasters sent FEMA money to Plankinton

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Plankinton →

Climate in Plankinton

Full climate →

Plankinton has cold, snowy winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 8°, and about 38 inches of snow falls in a normal winter.

31° / 11°Winter

58° / 34°Spring

84° / 59°Summer

61° / 37°Fall

How much snow does Plankinton get?About 38 inches a winter.Rain & snow →When is the first frost?Around Oct 5, with the last in spring around May 3.Frost dates →Is it warmer than it used to be?+1.1° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Plankinton →

Schools in Plankinton

All Plankinton schools →

B⁺

School Grade B+

The public schools Plankinton’s kids attend outperform 71% of South Dakota’s districts on state tests. Among towns with similar incomes, they rank near the top.

DistrictPlankinton School District 01-1Schools3

Plankinton Elementary - 02 AElementary · Grades PK–5 · 132 students Plankinton Middle School - 03 C+Middle · Grades 6–8 · 49 students Plankinton High School - 01 DHigh · Grades 9–12 · 86 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results, graded within SD. Ratings are from neighbors.