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Armour

A city of 698 people in South Dakota
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Around town

The places and views that make it Armour

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Main St1914
From Armour’s story

Main St, 1914

Photo · Library of Congress

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About Armour

City in South Dakota, United States
1885Established
698Population
1 sq miArea
1,529 ftElevation

Armour is a city in and the county seat of Douglas County, South Dakota, United States. The population was 698 at the 2020 census.

Official town website ↗

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

Town numbers

ZIP code57313
Area code605
Living in Armour

Work & commute in Armour

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Most working residents leave Armour for work: only 16% work in town. The top destinations are Corsica (13%), Mitchell (9%) and Sioux Falls (8%). Half commute less than 25 miles.

Corsica
13%
Mitchell
9%
Sioux Falls
8%
Platte
5%
Census LEHD 2023 · ACSWork & commute in Armour →

Health in Armour

Compared with South Dakota

3better than SD·9worse

of 26 measures CDC estimates. The other 14 are too close to call.

BetterToo close to callWorse

What stands out

Care nearby

Douglas County Memorial Hospital-CahArmour · 0.4 mi · ER · rural critical access
Horizon Health - Plankinton Medical and DentalPlankinton · 28.2 mi · sliding-scale fees
Primary careShortage · county-wide
DentalNo shortage
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Armour · CMS · HRSAHealth in Armour →

Natural hazards in Armour

35
Low

Expected storm and flood damage is higher than in 35% of U.S. communities.

🥶 Cold waves🌊 Inland flooding🌪️ Tornadoes
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Armour →

Climate in Armour

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Armour has cold, snowy winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 10°, and about 34 inches of snow falls in a normal winter.

33° / 12°Winter
59° / 35°Spring
84° / 60°Summer
62° / 37°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Armour →

Schools in Armour

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B

School Grade B

The public schools Armour’s kids attend outperform 60% of South Dakota’s districts on state tests. Among towns with similar incomes, they sit near the middle.

DistrictArmour School District 21-1Schools3

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.

Famous people from Armour

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Where Armour is

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Locator map of Armour
Wikimedia Commons · Map: Arkyan · CC BY-SA 3.0

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How things work in Armour

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We left the porch light on

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01