Roslyn

County:: Day County
County Seat:: No
Area (mi²):: 0.218
State:: South Dakota

Roslyn is a town located in Day County, South Dakota. Roslyn has a 2025 population of 180. Roslyn is currently declining at a rate of 0% annually and its population has decreased by -1.1% since the most recent census, which recorded a population of 182 in 2020.

The average household income in Roslyn is $54,389 with a poverty rate of 9.09%.The median age in Roslyn is 59.3 years: 53.5 years for males, and 68.8 years for females.

Demographics

The racial composition of Roslyn includes 77.01% White, 13.79% Native American, and smaller percentages for and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	134	77.01%
Native American	24	13.79%
Two or more races	16	9.2%

Roslyn Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Roslyn's average per capita income is $27,917. Household income levels show a median of $44,375. The poverty rate stands at 9.09%.

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
Married Families	$88,125	-
Families	$59,167	$66,926
Households	$44,375	$54,389
Non Families	$23,393	$33,578

$27,917

Average Income

$44,375

Median Household Income

9.09%

Poverty Rate