Millbrook Colony, South Dakota Demographics & Population 2026
During the 2020–2024 ACS period, Millbrook Colony, South Dakota had a total population of 47, the 377th largest community in South Dakota. The poverty rate is 57.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- More than 1 in 4 residents live below the poverty line (57.5%), well above the national average of 12.4%.
- Only 0.0% of adults have a bachelor's degree, well below the national average of 35.7%.
Millbrook Colony Quick Facts
How Millbrook Colony Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 54 | 47 | -13.0% |
How Millbrook Colony Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 35 | National average: 61
Education
Educational Attainment (Adults 25+)
Millbrook Colony Rankings in South Dakota
Explore South Dakota Rankings
Other Cities in Hanson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Alexandria | 692 | $102,679 | 3.3% | $180,200 |
| Emery | 539 | $67,321 | 6.7% | $152,400 |
| Fulton | 84 | $56,667 | 11.9% | $154,200 |
| Oak Lane Colony | 34 | N/A | 0.0% | N/A |
| Farmer | 31 | N/A | 0.0% | N/A |
| Rockport Colony | 23 | N/A | 0.0% | N/A |
Cities Similar to Millbrook Colony
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Quinn | 48 | $79,000 | N/A | 8.1% | 0.0% |
| Altamont | 46 | N/A | $252,800 | 7.4% | 0.0% |
| Vienna | 49 | $43,125 | N/A | 5.6% | 0.0% |
| Ravinia | 45 | $19,688 | $77,500 | 0.0% | 46.7% |
| Vivian | 50 | $61,528 | N/A | 6.0% | 0.0% |
A note before these figures: with a population of 47, Millbrook Colony's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Millbrook Colony is a small community located in South Dakota, within Hanson County. The total population is 47. It ranks as the 377th most populous out of 439 Census-designated places in South Dakota.
Age Demographics
The median age in Millbrook Colony is 67.2 years. This is 77% higher than the state median of 38.0 years.
Economy, Income & Housing
The poverty rate stands at 57.5%. This is 382% higher than the state poverty rate of 11.9%. 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
Every resident counted in Millbrook Colony was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.
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. Nationally, 35.7% 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, South Dakota is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. 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. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all South Dakota city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Millbrook Colony, South Dakota?
Millbrook Colony, South Dakota has a population of 47 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Millbrook Colony, SD?
The Census Bureau does not publish a reliable median household income estimate for Millbrook Colony — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Millbrook Colony, SD?
The poverty rate in Millbrook Colony is 57.5%. This means approximately 27 residents live below the federal poverty line.
What is the racial makeup of Millbrook Colony, South Dakota?
Millbrook Colony's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Millbrook Colony, SD?
The Census Bureau does not publish a reliable median home value estimate for Millbrook Colony — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Millbrook Colony, South Dakota?
0.0% of adults (25+) in Millbrook Colony hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.