Onida Flag

Onida

County:
Sully County
County Seat:
No
Area (mi²):
0.672
State:
South Dakota

Onida is a city located in Sully County, South Dakota. Onida has a 2025 population of 644 . Onida is currently declining at a rate of -1.98% annually and its population has decreased by -3.45% since the most recent census, which recorded a population of 667 in 2020.

The median household income in Onida is $71,050 with a poverty rate of 6.58%. The median age in Onida is 46.6 years: 54.1 years for males, and 42.2 years for females. For every 100 females there are 100.0 males.

644
Total Population
958
Density (mi²)
-13 -1.98%
Growth

Onida Population

Onida Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Onida includes 94.53% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

White (94.53%)

Two or more races (3.04%)

Black or African American (2.43%)

Race
Population
Percentage (of total)
White62294.53%
Two or more races203.04%
Black or African American162.43%

Onida Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Onida's average per capita income is $46,683. Household income levels show a median of $71,050. The poverty rate stands at 6.58%.

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$119,286-
Families$110,625$125,332
Households$71,050$95,527
Non Families$47,353$53,714

$46,683

Average Income

$71,050

Median Household Income

6.58%

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)