Brant Lake South, South Dakota Demographics & Population 2026
During the 2020–2024 ACS period, Brant Lake South, South Dakota had a total population of 211, the 229th largest community in South Dakota, with a median household income of $107,983, which is 44% higher than the state average. The poverty rate is 6.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 44% above the state average — one of the wealthiest communities in South Dakota.
Brant Lake South Quick Facts
How Brant Lake South 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 | 210 | 211 | +0.5% |
| Median household income | $105,000 | $107,983 | +2.8% |
How Brant Lake South Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 35 | National average: 61
Education
Educational Attainment (Adults 25+)
Brant Lake South Rankings in South Dakota
Explore South Dakota Rankings
Other Cities in Lake County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Madison | 6,094 | $65,593 | 9.5% | $193,100 |
| Lake Madison | 936 | $129,191 | 1.0% | $477,800 |
| Ramona | 538 | $78,750 | 26.2% | $85,800 |
| Chester | 152 | $68,333 | 0.0% | $147,500 |
| Wentworth | 138 | $62,188 | 13.8% | $83,300 |
| Brant Lake | 63 | $104,318 | 0.0% | $455,000 |
| Nunda | 40 | N/A | 27.5% | $118,800 |
| Winfred | 34 | N/A | 0.0% | N/A |
| Rustic Acres Colony | 30 | N/A | 0.0% | N/A |
Cities Similar to Brant Lake South
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Spring Creek Colony | 209 | N/A | N/A | 28.9% | 60.9% |
| Pringle | 206 | N/A | N/A | 9.4% | 4.4% |
| Eden | 221 | N/A | N/A | 43.6% | 1.4% |
| Cherry Creek | 224 | N/A | N/A | 9.9% | 21.9% |
| Mellette | 199 | $106,964 | $201,000 | 20.0% | 10.1% |
A note before these figures: with a population of 211, Brant Lake South'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
Brant Lake South is a small community located in South Dakota, within Lake County. The total population is 211. It ranks as the 229th most populous out of 439 Census-designated places in South Dakota.
Age Demographics
The median age in Brant Lake South is 54.1 years. This is 42% higher than the state median of 38.0 years. Only 1.4% of residents are under 18, indicating fewer families with children.
Economy, Income & Housing
The median household income in Brant Lake South is $107,983. This is 44% higher than the state median of $75,081. It is also 34% higher than the national median of $80,734. The poverty rate stands at 6.2%. This is 48% lower than the state poverty rate of 11.9%. The survey records no unemployed residents in Brant Lake South, which reflects the size of the sample rather than a labor market without joblessness. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 46% higher than the state average of 68.6%.
Race & Ethnicity
The largest racial or ethnic group in Brant Lake South is White (non-Hispanic), making up 62.6% of the population.
Education
13.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 58% lower than the state rate of 31.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.1%.
Data Sources & Methodology
All demographic data for Brant Lake South, 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.
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Frequently Asked Questions
What is the population of Brant Lake South, South Dakota?
Brant Lake South, South Dakota has a population of 211 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Brant Lake South, SD?
The median household income in Brant Lake South is $107,983, which is 34% higher than the national median of $80,734.
What is the poverty rate in Brant Lake South, SD?
The poverty rate in Brant Lake South is 6.2%. This means approximately 13 residents live below the federal poverty line.
What is the racial makeup of Brant Lake South, South Dakota?
Brant Lake South's population is 62.6% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Brant Lake South, SD?
The Census Bureau does not publish a reliable median home value estimate for Brant Lake South — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Brant Lake South, South Dakota?
13.5% of adults (25+) in Brant Lake South hold a bachelor's degree or higher, and 2.3% hold a graduate or professional degree.