Unified School District · SD
Armour School District 21-1
Armour School District 21-1 is a unified school district in South Dakota with a community population of 1,038. The median household income is $89,643 and the median age is 44.9.
1,038
Population
8
People / sq mi
$89,643
Median Income
44.9
Median Age
Armour School District 21-1 covers 130 sq mi of land at 8.0 people per square mile.
Race & Ethnicity
| White | 89.6% |
| Black or African American | 0.0% |
| Asian | 54.9% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$89,643
Median Household Income
$49,762
Per Capita Income
7.9%
Poverty Rate
1.4%
Unemployment
Housing
$107,100
Median Home Value
$781
Median Rent
78.4%
Homeownership
Education Attainment
91.0%
High School+
30.9%
Bachelor's+
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State rankings
Frequently Asked Questions
Armour School District 21-1 serves a community with a population of 1,038 according to the latest Census ACS 5-Year estimates. This unified school district is located in South Dakota.
The median household income in Armour School District 21-1 is $89,643, with a per capita income of $49,762. The poverty rate is 7.9%.
Armour School District 21-1 is 89.6% White, 0.0% Black or African American, 54.9% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In Armour School District 21-1, 91.0% of adults have a high school diploma or higher, and 30.9% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Armour School District 21-1 is $107,100, with a median rent of $781. The homeownership rate is 78.4%.
More from South Dakota
Data for Armour School District 21-1 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 4603780).
For this entity, the underlying data on this page comes from the U.S. Census Bureau ACS and decennial files. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
The methodology behind every numeric value on this page is publicly documented on the the U.S. Census Bureau ACS and decennial files portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. states, metros, cities, and ZIPs. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: U.S. Census Bureau ACS, 2026.