Seneca, SD
Population 26 · South Dakota
About Seneca, SD
Seneca is a small community located in South Dakota with a population of 26 residents according to the latest US Census Bureau American Community Survey data. The median household income is $40,750 per year, which is 46% below the national median of $75,149. The median age of 62.8 years is notably older the US median age of 38.9 years, suggesting a more established community with a higher proportion of long-term residents.
Housing Market Overview
The housing market in Seneca features a median home value of $28,500, which is 88% below the national median of $244,900. This makes Seneca one of the more affordable markets in the country, potentially attractive for first-time homebuyers. Median monthly rent is $0, 100% below the national average of $1,163/month. Of the 30 total housing units, 100% are owner-occupied (17 units) and 0% are renter-occupied (0 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in Seneca shows an unemployment rate of 0.0%, which is lower than the national rate of 3.7%, indicating a relatively strong job market. The poverty rate stands at 19.2%, above the national average of 12.4%. Workers in Seneca have an average one-way commute time of 0 minutes, one of the shorter commutes in the region.
Education & Demographics
0.0% of Seneca residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The lower educational attainment rate may reflect the area's industry mix, with more employment in trades, manufacturing, or agricultural sectors. The community's demographic composition includes 0.0% White, 0.0% Hispanic or Latino, 0.0% Black or African American, and 0.0% Asian residents, with 19.2% of the population being foreign-born.
How Seneca Ranks in South Dakota
Cost of Living in Seneca, SD
Compared to national averages, Seneca has a median household income of $40,750 (46% below the national median of $75,149). Home values average $28,500, which is 88% below the national median. Monthly rent at $0 is 100% below the US average of $1,163. Within South Dakota, Seneca's income is 37% below the state average of $64,650, and home values are 80% below the state median of $143,757.
Why Live in Seneca, SD?
Seneca offers affordable housing with a median home value of $28,500, below the US average of $244,900, and rent that’s lower than the national average at $0/month, and a strong job market with an unemployment rate of just 0.0%. Additionally, the city features short commute times averaging just 0 minutes.
Potential considerations include median household income ($40,750) that falls below the national average. However, Seneca’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Seneca has a population of 26 with a median age of 62.8 years. Compare Seneca with other cities to see how it stacks up, or explore all cities in South Dakota.
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Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Seneca
What is the population of Seneca, SD?
The population of Seneca, SD is 26 according to the latest US Census Bureau American Community Survey estimates. This makes it a small community in South Dakota.
What is the median household income in Seneca?
The median household income in Seneca, SD is $40,750 per year, which is 46% below the national median of $75,149.
What is the median home value in Seneca?
The median home value in Seneca, SD is $28,500, which is 88% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in Seneca?
The median monthly rent in Seneca, SD is $0, which is 100% below the national average of $1,163/month.
What is the unemployment rate in Seneca?
The unemployment rate in Seneca, SD is 0.0%, compared to the national average of 3.7%. This lower-than-average rate suggests a relatively healthy local job market.
Is Seneca, SD a good place to live?
Seneca offers a moderate cost of living, affordable housing, and a strong job market. With a population of 26 and a median age of 62.8, the city appeals to established professionals and retirees.
How educated is Seneca, SD?
0.0% of residents in Seneca aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The educational profile reflects the area's industry mix and employment landscape.
What is the cost of living in Seneca?
Key cost-of-living indicators for Seneca, SD: median home value is $28,500 (88% below national), median rent is $0/month, and median household income is $40,750. The home-value-to-income ratio is 0.7x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in Seneca?
The poverty rate in Seneca, SD is 19.2%, compared to the national average of 12.4%. Residents and prospective movers should be aware of the economic challenges facing parts of this community.
How diverse is Seneca, SD?
Seneca's population is 0.0% White, 0.0% Hispanic or Latino, 0.0% Black or African American, 0.0% Asian, and 0.0% two or more races. 19.2% of residents are foreign-born.