Sinai Flag

Sinai

County Seat:
No
Area (mi²):
0.368
State:
South Dakota

Sinai is a town located in Brookings County, South Dakota. Sinai has a 2026 population of 103. Sinai is currently growing at a rate of 1.98% annually and its population has increased by 9.57% since the most recent census, which recorded a population of 94 in 2020.

The median household income in Sinai is $56,875 with a poverty rate of 1.86%. The median age in Sinai is 24.9 years: 24.9 years for males, and 16.5 years for females. For every 100 females there are 115.0 males.

103
Total Population
280
Density (mi²)
2 1.98%
Growth

Sinai Population

Sinai Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202610321.98%
202510111%
202410033.09%
20239700%
20229733.19%
20219400%
20209400%
2019126-1-0.79%
201812721.6%
201712521.63%
201612300%
201512300%
201412321.65%
2013121-2-1.63%
201212343.36%
2011119-1-0.83%
2010119-1-0.83%

Median Age

Overall: 24.9 years
Female: 16.5 years
Male: 24.9 years

Sinai Adults

There are 121 adults, (7 of whom are seniors) in Sinai.

Sex Ratio

Female: 100 (46.5%)
Male: 115 (53.5%)

Demographics

The racial composition of Sinai includes 89.3% White, and smaller percentages for other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White19289.3%
Two or more races188.37%
Other race52.33%
Race
Population ↓
Percentage (of total)
Two or more races188.37%
Other race52.33%
White20.93%
Race
Population ↓
Percentage (of total)
White19088.37%

Sinai Marital Status

Economics and Income Statistics

Sinai 's average per capita income is $51,042. Household income levels show a median of $56,875. The poverty rate stands at 1.86%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Families$73,750$81,262
Married Families$67,500-
Households$56,875$72,165
Non Families$43,750$60,588

$51,042

Average Income

$56,875

Median Household Income

1.86%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)