Millbrook Colony CDP, South Dakota Demographics & Population 2026

Population Overview

Millbrook Colony CDP is a small community located in South Dakota. The total population is 54. It ranks as the 363rd most populous out of 439 cities and towns in South Dakota.

Age Demographics

The median age in Millbrook Colony CDP is 67.3 years. This is 79% higher than the state median of 37.7 years.

Economy, Income & Housing

The poverty rate stands at 68.5%. This is 471% higher than the state poverty rate of 12.0%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. 50.0% of occupied housing units are owner-occupied. This homeownership rate is 27% lower than the state average of 68.6%.

Race & Ethnicity

Millbrook Colony CDP has a predominantly White (non-Hispanic) population, comprising 100.0% of all residents.

Education

0.0% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 100% lower than the state rate of 31.1%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 0.0%.

Data Sources & Methodology

All demographic data for Millbrook Colony CDP, South Dakota is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against South Dakota state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 439 Census-designated places in South Dakota. For official data, visit data.census.gov.