Unified School District · SD
Castlewood School District 28-1
Castlewood School District 28-1 is a unified school district in South Dakota with a community population of 1,486. The median household income is $92,462 and the median age is 33.6.
1,486
Population
12
People / sq mi
$92,462
Median Income
33.6
Median Age
Castlewood School District 28-1 covers 128 sq mi of land at 11.6 people per square mile.
Race & Ethnicity
| White | 94.5% |
| Black or African American | 0.0% |
| Asian | 60.3% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$92,462
Median Household Income
$36,980
Per Capita Income
3.1%
Poverty Rate
0.8%
Unemployment
Housing
$237,900
Median Home Value
$1,133
Median Rent
87.3%
Homeownership
Education Attainment
95.9%
High School+
24.6%
Bachelor's+
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State rankings
Frequently Asked Questions
Castlewood School District 28-1 serves a community with a population of 1,486 according to the latest Census ACS 5-Year estimates. This unified school district is located in South Dakota.
The median household income in Castlewood School District 28-1 is $92,462, with a per capita income of $36,980. The poverty rate is 3.1%.
Castlewood School District 28-1 is 94.5% White, 0.0% Black or African American, 60.3% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In Castlewood School District 28-1, 95.9% of adults have a high school diploma or higher, and 24.6% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Castlewood School District 28-1 is $237,900, with a median rent of $1,133. The homeownership rate is 87.3%.
More from South Dakota
Data for Castlewood School District 28-1 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 4611280).
this entity is one of the data points covered by this site’s U.S. population demographics dataset. The detail above comes directly from the U.S. Census Bureau ACS and decennial files; the context that follows situates the headline numbers against the broader distribution across U.S. states, metros, cities, and ZIPs.
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.