Isabel

County:: Dewey County
County Seat:: No
Area (mi²):: 0.845
State:: South Dakota

Isabel is a town located in Dewey County, South Dakota. Isabel has a 2025 population of 145. Isabel is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 145 in 2020.

The average household income in Isabel is $69,825 with a poverty rate of 9.34%.The median age in Isabel is 38.1 years: 38.3 years for males, and 35.9 years for females.

Demographics

The racial composition of Isabel includes 79.12% White, 20.33% Native American, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	144	79.12%
Native American	37	20.33%
Black or African American	1	0.55%

Isabel Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Isabel's average per capita income is $47,917. Household income levels show a median of $70,625. The poverty rate stands at 9.34%.

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	$103,125	-
Families	$84,167	$86,113
Households	$70,625	$69,825
Non Families	$51,667	$50,108

$47,917

Average Income

$70,625

Median Household Income

9.34%

Poverty Rate