Lake Sinai township

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

Lake Sinai township is located in Brookings County, South Dakota. Lake Sinai township has a 2025 population of 178. Lake Sinai township 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 township is $84,485 with a poverty rate of 0%. The median age in Lake Sinai township is 72.6 years: 72.1 years for males, and 74.4 years for females.

Demographics

The racial composition of Lake Sinai township includes 100% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race, Two or more races and multiracial populations.

Population by Race

White

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Two or more races

Race	Population	Percentage (of total)
White	148	100%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

Lake Sinai township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lake Sinai township'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