Lake Sinai Flag

Lake Sinai

County Seat:
No
Area (mi²):
33.27
State:
South Dakota

Lake Sinai is located in Brookings County, South Dakota. Lake Sinai has a 2025 population of 178 . Lake Sinai is currently growing at a rate of 0.56% annually and its population has increased by 6.59% since the most recent census, which recorded a population of 167 in 2020.

The average household income in Lake Sinai is $84,485 with a poverty rate of 0%. The median age in Lake Sinai is 72.6 years: 72.1 years for males, and 74.4 years for females. For every 100 females there are 150.8 males.

178
Total Population
5
Density (mi²)
1 0.56%
Growth

Lake Sinai Population

Lake Sinai Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Lake Sinai includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

White (100%)

Race
Population
Percentage (of total)
White148100%

Lake Sinai Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lake Sinai's average per capita income is $78,194. Household income levels show a median of $74,167. The poverty rate stands at 0%.

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
Households$74,167$84,485
Families$74,167$84,485
Married Families$73,946-
Non Families--

$78,194

Average Income

$74,167

Median Household Income

0%

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)