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, Asian, Native Hawaiian or Pacific Islander, other race, Two or more races and multiracial populations.

Population by Race

White

Native American

Black or African American

Asian

Native Hawaiian or Pacific Islander

Other race

Two or more races

Race	Population	Percentage (of total)
White	144	79.12%
Native American	37	20.33%
Black or African American	1	0.55%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

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