Lake Sinai township Flag

Lake Sinai township

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 2026 population of 179. Lake Sinai township is currently growing at a rate of 0.56% annually and its population has increased by 7.19% since the most recent census, which recorded a population of 167 in 2020.

The median household income in Lake Sinai township is $76,392 with a poverty rate of 0%. The median age in Lake Sinai township is 72.8 years: 72.4 years for males, and 74.5 years for females. For every 100 females there are 132.8 males.

179
Total Population
5.4
Density (mi²)
1 0.56%
Growth

Lake Sinai township Population

Lake Sinai township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202617910.56%
202517810.56%
202417710.57%
202317621.15%
202217442.35%
202117031.8%
2020167-1-0.6%
2019182-2-1.09%
201818431.66%
201718100%
201618121.12%
201517910.56%
2014178-1-0.56%
201317910.56%
201217821.14%
201117610.57%
2010174-1-0.57%

Median Age

Overall: 72.8 years
Female: 74.5 years
Male: 72.4 years

Lake Sinai township Adults

There are 151 adults, (134 of whom are seniors) in Lake Sinai township.

Sex Ratio

Female: 67 (42.9%)
Male: 89 (57.1%)

Demographics

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

Population by Race

Race
Population ↓
Percentage (of total)
White156100%
Race
Population ↓
Percentage (of total)
White156100%

Lake Sinai township Marital Status

Economics and Income Statistics

Lake Sinai township 's average per capita income is $77,500. Household income levels show a median of $76,392. 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$76,392$84,723
Families$76,392$84,723
Married Families$76,321-
Non Families--

$77,500

Average Income

$76,392

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)