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Allison

A township of 21 people in Brown County, South Dakota
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The places and views that make it Allison

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Outdoors in Allison

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Conserved land57%13,033 of 22,816 acres
Trails7.1 mi0.2 mi per sq mi
Parks & preserves0named on the map

Know a trail or park that’s missing? Anyone can add it to OpenStreetMap, and it shows up here on the next refresh.

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

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Know Allison

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About Allison

Township in Brown County, South Dakota
21Population

Allison Township is a township in Brown County, South Dakota, United States. According to the 2010 census, there were 20 people residing in the township of Allison. The population density was 0.22 inhabitants/km².

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

Town numbers

Living in Allison

Health in Allison

Compared with South Dakota

6better than SD·2worse

of 26 measures CDC estimates. The other 18 are too close to call.

BetterToo close to callWorse

What stands out

Care nearby

Avera St. LukesAberdeen · 25.5 mi · ER
Horizon Health - AberdeenAberdeen · 25.9 mi · sliding-scale fees
Primary careShortage · county-wide
DentalShortage · county-wide
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · ZIP code 57441 · CMS · HRSAHealth in Allison →

Natural hazards in Allison

37
Low

Expected storm and flood damage is higher than in 37% of U.S. communities.

🌊 Inland flooding🥶 Cold waves🧊 Hail
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Allison →

Climate in Allison

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Allison has cold, snowy winters and pleasant summers, with very little rain. A typical July afternoon reaches 83°, a January night drops to 3°, and about 39 inches of snow falls in a normal winter.

24° / 6°Winter
54° / 31°Spring
80° / 57°Summer
56° / 33°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Allison →

Libraries near Allison

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Nearest: Emma Burnham Public LibraryFrederick · 7.7 miles · 14 hrs a week
Famous people from AllisonWriters, athletes, leaders and more who were born in Allison.Meet them →

How things work in Allison

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The coffee’s on

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01