Grenville Flag

Grenville

County:
Day County
County Seat:
No
Area (mi²):
33.553
State:
South Dakota

Grenville is located in Day County, South Dakota. Grenville has a 2025 population of 81 . Grenville is currently declining at a rate of 0% annually and its population has increased by 1.25% since the most recent census, which recorded a population of 80 in 2020.

The average household income in Grenville is $90,841 with a poverty rate of 5.42%. The median age in Grenville is 60.4 years: 60.8 years for males, and 40.5 years for females. For every 100 females there are 186.2 males.

81
Total Population
2
Density (mi²)

Grenville Population

Grenville Population

Data after 2023 is projected based on recent change

Demographics

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

Population by Race

White (100%)

Race
Population
Percentage (of total)
White166100%

Grenville Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Grenville's average per capita income is $56,538. Household income levels show a median of $0. The poverty rate stands at 5.42%.

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$120,156$108,934
Households-$90,841
Married Families--
Non Families--

$56,538

Average Income

$0

Median Household Income

5.42%

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)