Sinai
Sinai has notably lower household income than the US average, with a median household income of $56,875. The city has grown rapidly, with population up 62% since 2000. 23% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has more than doubled since 2000, reaching $89,300. At a median age of 24.9, residents skew younger than the country as a whole.
Population & growth
PEP 2025 EST:102 residents (Census Bureau Vintage 2025, released March 2026)
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Education
Commute & transportation
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People & community
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How many people live in Sinai, South Dakota?
Sinai, South Dakota has about 215 residents according to the 2024 American Community Survey.
What is the median household income in Sinai, South Dakota?
The typical household in Sinai, South Dakota earns about $56,875 a year. Half of households make more than that, and half make less.
Is Sinai, South Dakota expensive?
In Sinai, South Dakota, the median home is worth about $89,300.
How educated are people in Sinai, South Dakota?
About 22.6% of adults age 25 and over in Sinai, South Dakota hold a bachelor's degree or higher.
What is the poverty rate in Sinai, South Dakota?
About 1.9% of people in Sinai, South Dakota live below the federal poverty line.
Has Sinai, South Dakota grown since 1990?
Yes, Sinai, South Dakota has grown since 1990. The population has added about 98 residents, a change of about 84 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024