Kennebec, South Dakota Demographics & Population 2026
During the 2020–2024 ACS period, Kennebec, South Dakota had a total population of 296, the 199th largest town in South Dakota, with a median household income of $74,896, which is about the same as the state average. The poverty rate is 6.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 2.1x.
- Near full employment with an unemployment rate of just 1.4%.
Kennebec Quick Facts
How Kennebec 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 | 367 | 296 | -19.3% |
| Median household income | $71,667 | $74,896 | +4.5% |
| Median home value | $145,100 | $155,700 | +7.3% |
How Kennebec 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
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+)
Kennebec Rankings in South Dakota
Explore South Dakota Rankings
Other Cities in Lyman County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Lower Brule | 743 | $28,750 | 55.8% | $21,900 |
| Oacoma | 548 | $73,333 | 5.5% | $171,700 |
| West Brule | 471 | $37,917 | 50.3% | N/A |
| Presho | 313 | $63,393 | 0.0% | $162,500 |
| Reliance | 211 | $55,313 | 3.8% | $123,200 |
| Vivian | 50 | $61,528 | 0.0% | N/A |
Cities Similar to Kennebec
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Florence | 317 | $75,909 | $158,700 | 8.0% | 9.8% |
| Pukwana | 300 | $63,750 | $100,000 | 13.5% | 2.3% |
| Hosmer | 289 | $65,096 | $59,600 | 38.5% | 12.1% |
| Spring Creek | 330 | N/A | N/A | 0.0% | 93.3% |
| Buffalo | 278 | $85,104 | $114,100 | 15.8% | 6.8% |
A note before these figures: with a population of 296, Kennebec'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
Kennebec is a small community located in South Dakota, within Lyman County. The total population is 296. It ranks as the 199th most populous out of 439 Census-designated places in South Dakota.
Age Demographics
The median age in Kennebec is 38.0 years. This is about the same as the state median of 38.0 years. With 30.7% of the population under 18, Kennebec has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Kennebec is $74,896. This is about the same as the state median of $75,081. It is also 7% lower than the national median of $80,734. The poverty rate stands at 6.1%. This is 49% lower than the state poverty rate of 11.9%. The unemployment rate is 1.4%. This is 51% lower than the state rate of 2.9%. The median home value is $155,700. Housing costs are 40% lower than the state median of $257,400. With a home-value-to-income ratio of just 2.1x, Kennebec is one of the most affordable housing markets in the area. 85.0% of occupied housing units are owner-occupied. This homeownership rate is 24% higher than the state average of 68.6%.
Race & Ethnicity
Kennebec has a predominantly White (non-Hispanic) population, comprising 93.2% of all residents.
Education
19.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 38% 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 95.0%.
Data Sources & Methodology
All demographic data for Kennebec, 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 Kennebec, South Dakota?
Kennebec, South Dakota has a population of 296 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Kennebec, SD?
The median household income in Kennebec is $74,896, which is 7% lower than the national median of $80,734.
What is the poverty rate in Kennebec, SD?
The poverty rate in Kennebec is 6.1%. This means approximately 18 residents live below the federal poverty line.
What is the racial makeup of Kennebec, South Dakota?
Kennebec's population is 93.2% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Kennebec, SD?
The median home value in Kennebec is $155,700. The home-value-to-income ratio is 2.1x.
How educated is Kennebec, South Dakota?
19.9% of adults (25+) in Kennebec hold a bachelor's degree or higher, and 3.0% hold a graduate or professional degree.