Owanka is an unincorporated community in Pennington County, South Dakota, United States. Although not tracked by the United States Census Bureau, Owanka has been assigned the ZIP Code of 57767.

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Town numbers

ZIP code57767

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Living in Owanka

Health in Owanka

Compared with South Dakota

3better than SD·4worse

of 26 measures CDC estimates. The other 19 are too close to call.

Conditions 1▲ 4▼ 7 close Habits all close Care 2▲ 5 close Mind all close

BetterToo close to callWorse

What stands out

31.1%Fewer adults with obesitySD 35.9% · better 73.5%More adults screened for colon cancerSD 65.5% · better 8.3%More adults with heart diseaseSD 6.8% · worse

Care nearby

Monument Health Rapid City HospitalRapid City · 31.7 mi · ER

Main ClinicRapid City · 31.2 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · ZIP codes 57767, 57761, 57791 · CMS · HRSAHealth in Owanka →

Natural hazards in Owanka

High

Expected storm and flood damage is higher than in 74% of U.S. communities.

🌊 Inland flooding🔥 Wildfire🥶 Cold waves

0Does Owanka flood?no paid flood claims on record NoneDisasters that paid out hereof 19 declared for Pennington County MapOwanka vs. its neighborsnearby towns shaded by rating

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

Climate in Owanka

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Owanka has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 88°, a January night drops to 12°, and about 30 inches of snow falls in a normal winter.

37° / 14°Winter

59° / 33°Spring

85° / 57°Summer

63° / 35°Fall

How much snow does Owanka get?About 30 inches a winter.Rain & snow →When is the first frost?Around Oct 1, with the last in spring around May 10.Frost dates →Is it warmer than it used to be?+1.3° vs. the 20th century.Then & now →

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

Libraries near Owanka

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Nearest: Wall Community LibraryWall · 16.7 miles · 19 hrs a week

Where Owanka is

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Imported town boundary

South Dakota · SD · Pennington CountyTown boundary on OpenStreetMap →

Around town

Bordering towns

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Owanka Wasta Crooked Creek

EWasta SECrooked Creek

Compare side by side:Owanka vs Wasta Owanka vs Crooked Creek

How things work in Owanka

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