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Onida, SD
Key Indicators
A quick look at key numbers
Population
644
Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates
Median Age
42.2
years ∙ half population younger than 42.2, half older
Diversity Index
11.2%
chance two random people differ in race and ethnicity
Nativity
0.9%
foreign-born population
Geographic Context
Location, size, and surroundings
About
Onida is a city within Sully County, South Dakota, United States.
Co-ordinates
DEC44.704872° N, 100.067506° W
DMS44° 42′ 17.54″ N, 100° 04′ 03.02″ W
Population Density & area
958.3/sq mi
(369.9/km²)
Demographics & Living
Who lives here, how households are formed, and community composition
Population Composition
Key characteristics of the population
Sex Distribution
51.1%
male
Male
51.1%
Female
48.9%
males per 100 females
Onida
104.4
Sully County
123.1
South Dakota
103.1
Nativity
0.9%
foreign-born population
% Foreign-born
Onida
0.9%
Sully County
4.8%
South Dakota
4%
Age Distribution
How the population is spread across age groups
Median Age
42.2
years ∙ half population younger than 42.2, half older
Dependency ratio
98.2
dependents per 100 working-age adults
Onida
98.2
Sully County
82.3
South Dakota
73
AGE DISTRIBUTION
Distribution of age group
Median age
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Age Group | |||
| Children (Under 18) | 27.2% | 22% | 24.2% |
| Working age (18-64) | 50.4% | 54.9% | 57.8% |
| Senior (65+) | 22.4% | 23.1% | 18% |
| Dependency ratio | |||
| Total dependency ratio | 98.2 | 82.3 | 73 |
| Child dependency ratio | 53.8 | 40.1 | 41.9 |
| Old-age dependency ratio | 44.3 | 42.2 | 31.1 |
Racial & Ethnic Composition
Racial and ethnic makeup and how it compares
Race & Ethnicity
Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.
Diversity Index
11.2%
chance two random people differ in race and ethnicity
Onida
11.2%
Sully County
24.6%
South Dakota
35.3%
Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.
RACIAL & ETHNIC COMPOSITION
Race & Ethnicity
Percentage of Onida population
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Hispanic or Latino | 0% | 0% | 4.8% |
| Mexican | 0% | 0% | 2.6% |
| Puerto Rican | 0% | 0% | 0.4% |
| Cuban | 0% | 0% | 0.1% |
| Other Hispanic / Latino | 0% | 0% | 1.7% |
| Not Hispanic or Latino | 100% | 100% | 95.2% |
| One race | 95.8% | 95.3% | 90.8% |
| White | 94.1% | 86.5% | 79.8% |
| Black or African American | 1.7% | 4.5% | 2.1% |
| American Indian and Alaska Native | 0% | 3.9% | 7.1% |
| Asian | 0% | 0% | 1.4% |
| Native Hawaiian and Other Pacific Islander | 0% | 0% | 0% |
| Some Other Race | 0% | 0.4% | 0.3% |
| Two or more races (Multiracial) | 4.2% | 4.7% | 4.4% |
Household & Families Composition
Household size, type, and family structure
Household structure
49.7%
family
Family
49.7%
Non family
50.3%
% family households
Onida
49.7%
Sully County
56.7%
South Dakota
61.3%
Average household size
2.21
persons per household
Household & Family COMPOSITION
Households
Percentage of Onida population
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Total households | 292 | 637 | 365,544 |
| Average houshold size | 2.21 | 2.39 | 2.39 |
| Family households | 145 | 361 | 224,058 |
| Average family size | 3.2 | 3.07 | 3.05 |
| Married couple family | 136 | 331 | 176,597 |
| Other families | 9 | 30 | 47,461 |
| Male householder | 8 | 13 | 17,711 |
| Female householder | 1 | 17 | 29,750 |
| Non-family households | 147 | 276 | 141,486 |
| One-person households | 135 | 218 | 116,755 |
| Male householder | 88 | 134 | 57,880 |
| Senior (65+) living alone | 37 | 62 | 17,403 |
| Female householder | 47 | 84 | 58,875 |
| Senior (65+) living alone | 27 | 58 | 29,381 |
| Other living arrangements | 12 | 58 | 24,731 |
Housing Profile
Housing stock, ownership, rentals, and cost burdens
Total housing units
349
housing units
Onida
349
Sully County
934
South Dakota
408,584
Occupancy status
83.7%
occupied
Occupied
83.7%
Vacant
16.3%
vacancy rate
Onida
16.3%
Sully County
31.8%
South Dakota
10.5%
Housing Characteristics
How the housing supply is structured and used
Types of Housing unit
78.2%
Single family houses
Median Year Built
1972
Half of houses were built before 1972, and half after.
Note: Median year built reflects occupied units only; distribution includes all units.
Housing Characteristics
Units, rooms & bedrooms
Physical characteristics of housing units
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Rooms per unit | |||
| Median rooms | 6 | 5.7 | 5.9 |
| 1–3 rooms | 10.6% | 5.8% | 13.6% |
| 4–6 rooms | 48.4% | 55.7% | 44.6% |
| 7+ rooms | 41% | 38.5% | 41.8% |
| Bedrooms | |||
| No bedroom / studio | 0% | 0% | 1.9% |
| 1 bedroom | 10.3% | 5.9% | 10.1% |
| 2 bedrooms | 22.6% | 15.8% | 26.4% |
| 3 bedrooms | 40.4% | 51.6% | 32% |
| 4+ bedrooms | 26.6% | 26.6% | 29.6% |
| At a glance | |||
| Median year built | 1972 | 1977 | 1982 |
| Total housing units | 349 | 934 | 408,584 |
Occupancy Profile
Who is inside and how they use it
Homeownership
80.1%
owners
Renter-occupied
19.9%
Owner-occupied
80.1%
homeownership rate
Onida
80.1%
Sully County
72.8%
South Dakota
68.6%
Average household size
2.26
Owner-occupied
1.97
Renter-occupied
owner-occupied average size
Onida
2.26
Sully County
2.39
South Dakota
2.54
Housing Characteristics
Occupied unit characteristics
Tenure, crowding, and utilities
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Total occupied units | 292 | 637 | 365,544 |
| Year moved in | |||
| 2020 or later | 15.4% | 20.2% | 25.4% |
| 2010 to 2019 | 33.9% | 24.6% | 39.7% |
| 2000 to 2009 | 10.6% | 21.7% | 16.2% |
| 1999 or earlier | 40.1% | 33.5% | 18.7% |
| Occupants per room | |||
| 1.00 or fewer | 100% | 100% | 97.7% |
| 1.01 to 1.50 | 0% | 0% | 1.6% |
| 1.51 or more | 0% | 0% | 0.7% |
| Vehicles availability | |||
| No vehicles | 4.5% | 2.4% | 5.2% |
| 1 vehicle | 26% | 24.3% | 28.4% |
| 2 vehicles | 41.4% | 38.5% | 36.3% |
| 3 or more vehicles | 28.1% | 34.9% | 30.1% |
| House heating fuel used | |||
| Gas | 71.3% | 52.2% | 63.1% |
| Electricity | 25% | 43.6% | 32.4% |
| Solar | 0% | 0% | 0% |
| Fuel oil, kerosene etc | 2.4% | 3.3% | 1.3% |
| All other fuels | 1.4% | 0.6% | 2.4% |
| No fuel used | 0% | 0.3% | 0.8% |
| Selected characteristics | |||
| Lacking complete plumbing | 2.4% | 1.1% | 0.5% |
| Lacking complete kitchen | 2.4% | 1.3% | 0.9% |
| No telephone service available | 0.7% | 0.3% | 1.1% |
Housing Value
What owner-occupied units are worth
Median home value
$178,600
owner-occupied units
Housing Cost Burden
7.2%
of homeowners with a mortgage are cost-burdened
Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.
Financial characteristics
Property value and housing costs
Tenure, crowding, and utilities
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Property value | |||
| Median Value | $178,600 | $205,400 | $257,400 |
| Under $100,000 | 22.7% | 19.8% | 16.1% |
| $100,000 - $200,000 | 35.1% | 29.3% | 19.5% |
| $200,000 - $300,000 | 20.5% | 14.4% | 24.4% |
| $300,000 - $500,000 | 17.1% | 24.8% | 26% |
| $500,000 - $1,000,000 | 4.7% | 11.6% | 12.1% |
| $1,000,000 and more | 0% | 0% | 1.8% |
| Owner-occupied households | |||
| With a mortgage | 41.5% | 36% | 54.5% |
| Without a mortgage | 58.5% | 64% | 45.5% |
| Median monthly owner costs | |||
| With a mortgage | $1,399 | $1,542 | $1,680 |
| Without a mortgage | $570 | $558 | $617 |
| Gross rent | |||
| Median rent | $939 | $842 | $946 |
Education Profile
How educated is the community and how education pays off
Adults with a college degree
29.6%
of adults 25+ with a bachelor's degree or higher
Onida
29.6%
Sully County
24.1%
South Dakota
31.9%
Adults without a high school diploma
4.1%
of adults (25+) without a high school diploma
Onida
4.1%
Sully County
3.9%
South Dakota
6.8%
School Enrollment
Who is enrolled in school and at what level
School enrollment
135
population (age 3+) enrolled in school
College-going rate (18-24 yr olds)
23.1%
of 18-24-year-olds in college or graduate school
Enrollment & school type
Enrollment levels, college-going rate, and public vs private school split
Population 3+ currently enrolled in a school
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Total enrolled (age 3+) | 135 | 298 | 216,085 |
| Nursery / preschool | 11.1% | 5% | 6.1% |
| K–12 | 79.3% | 84.9% | 73% |
| Kindergarten | 2.2% | 1% | 5.6% |
| Elementary: Grades 1–4 | 21.5% | 24.5% | 22.3% |
| Elementary: Grades 5–8 | 20.7% | 27.2% | 22.8% |
| High School: Grades 9–12 | 34.8% | 32.2% | 22.3% |
| College or graduate school | 9.6% | 10.1% | 20.9% |
| College, undergraduate | 6.7% | 3.7% | 17.1% |
| Graduate, professional school | 3% | 6.4% | 3.8% |
| College-going rate · 18-24 yr olds | 23.1% | 7.9% | 35.1% |
| School type | |||
| Public school | 100% | 80.5% | 86.9% |
| Private school | 0% | 19.5% | 13.1% |
Education Attainment by Level & Gender
What is the highest level of education completed among adults
Education attainment
443
population 25 years and over
Attainment by gender
Male vs Female
Adults (25+) · Share within each education level
* The Census Bureau did not publish education attainment by gender data for Onida due to an insufficient sample size to produce reliable estimates.
Educational Attainment Overview
Distribution and key education attainment rates for adults (25+)
Highest credential completed · adults 25+
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Population (25+) | 443 | 1,089 | 603,746 |
| Less than 9th grade | 0% | 0% | 2.6% |
| 9th–12th, no diploma | 4.1% | 3.9% | 4.2% |
| High school diploma or GED | 24.8% | 38.2% | 29% |
| Some college, no degree | 18.5% | 18% | 19.9% |
| Associate's degree | 23% | 15.9% | 12.3% |
| Bachelor's degree or higher | 29.6% | 24.1% | 31.9% |
| Bachelor's degree | 22.6% | 18.5% | 21.9% |
| Graduate or professional | 7% | 5.5% | 10% |
| High School or higher | 95.9% | 96.1% | 93.2% |
Earnings by education level
percentage as applicable
Median Earnings
$49,271
Median earnings for adults 25+, by level
Poverty Rate
0%
for ages 25+, with bachelors degree or higher
Outcomes by Education Level
Earnings and poverty rates across education levels (25+)
Adults 25+
| Onida | Sully County | South Dakota | |
|---|---|---|---|
| Median earnings | |||
| Population 25+, with earnings | $49,271 | $48,446 | $49,402 |
| Less than high school graduate | $— | $— | $33,790 |
| High school graduate (includes equivalency) | $48,625 | $47,786 | $40,544 |
| Some college or associate's degree | $51,250 | $54,375 | $47,061 |
| Bachelor's degree | $45,625 | $44,837 | $58,363 |
| Graduate or professional degree | $44,861 | $50,714 | $72,377 |
| Poverty rates | |||
| Less than high school graduate | 33.3% | 31% | 28% |
| High school graduate (includes equivalency) | 6.4% | 12.7% | 13.2% |
| Some college or associate's degree | 6.5% | 5.4% | 8.5% |
| Bachelor's degree or higher | 0% | 1.5% | 4.2% |
About Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.
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