Sinai, SD
Population 220 · South Dakota
About Sinai, SD
Sinai is a small community located in South Dakota with a population of 220 residents according to the latest US Census Bureau American Community Survey data. The median household income is $52,188 per year, which is 31% below the national median of $75,149. The median age of 24.9 years is notably younger the US median age of 38.9 years, indicating a younger, often more dynamic population base.
Housing Market Overview
The housing market in Sinai features a median home value of $91,500, which is 63% below the national median of $244,900. This makes Sinai 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 83 total housing units, 67% are owner-occupied (51 units) and 33% are renter-occupied (25 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in Sinai shows an unemployment rate of 7.6%, which is significantly above the national rate of 3.7%, suggesting economic challenges in the area. The poverty rate stands at 1.4%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in Sinai have an average one-way commute time of 29.3 minutes.
Education & Demographics
21.3% of Sinai 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 6.8% White, 0.0% Hispanic or Latino, 0.0% Black or African American, and 1.8% Asian residents, with 4.5% of the population being foreign-born.
Cost of Living in Sinai, SD
Compared to national averages, Sinai has a median household income of $52,188 (31% below the national median of $75,149). Home values average $91,500, which is 63% below the national median. Monthly rent at $0 is 100% below the US average of $1,163. Within South Dakota, Sinai's income is 19% below the state average of $64,650, and home values are 36% below the state median of $143,757.
Why Live in Sinai, SD?
Sinai offers affordable housing with a median home value of $91,500, below the US average of $244,900, and rent that’s lower than the national average at $0/month, and a low poverty rate of 1.4%, better than the national average.
Potential considerations include median household income ($52,188) that falls below the national average. However, Sinai’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Sinai has a population of 220 with a median age of 24.9 years. Compare Sinai 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 Sinai
What is the population of Sinai, SD?
The population of Sinai, SD is 220 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 Sinai?
The median household income in Sinai, SD is $52,188 per year, which is 31% below the national median of $75,149.
What is the median home value in Sinai?
The median home value in Sinai, SD is $91,500, which is 63% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in Sinai?
The median monthly rent in Sinai, SD is $0, which is 100% below the national average of $1,163/month.
What is the unemployment rate in Sinai?
The unemployment rate in Sinai, SD is 7.6%, compared to the national average of 3.7%. Job seekers may want to research the dominant industries in the area.
Is Sinai, SD a good place to live?
Sinai offers a moderate cost of living, affordable housing, and growing employment opportunities. With a population of 220 and a median age of 24.9, the city appeals to young professionals and families.
How educated is Sinai, SD?
21.3% of residents in Sinai 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 Sinai?
Key cost-of-living indicators for Sinai, SD: median home value is $91,500 (63% below national), median rent is $0/month, and median household income is $52,188. The home-value-to-income ratio is 1.8x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in Sinai?
The poverty rate in Sinai, SD is 1.4%, compared to the national average of 12.4%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is Sinai, SD?
Sinai's population is 6.8% White, 0.0% Hispanic or Latino, 0.0% Black or African American, 1.8% Asian, and 0.0% two or more races. 4.5% of residents are foreign-born.