57466 ZIP Code — Onaka, SD
Faulk County, South Dakota
ZIP code 57466 is located in Onaka, South Dakota, within Faulk County. It covers approximately 137.26 square miles and serves a population of 190 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.
190
population
137.26
sq mi land
Standard
ZIP type
Central (CT)
timezone
57466 ZIP code map
Cities in ZIP code 57466
Below are the cities the US Postal Service accepts for ZIP code 57466. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Onaka | Preferred |
Nearby ZIP codes
57475 Tolstoy (9.4 mi)
57473 Seneca (14.4 mi)
57471 Roscoe (14.4 mi)
57428 Bowdle (16 mi)
57450 Hoven (17.9 mi)
57438 Faulkton (19.6 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 190 |
| Population density | 1 / sq mi |
| State FIPS | 46 |
| County FIPS | 049 |
| Geography | |
|---|---|
| Land area | 137.26 sq mi |
| Water area | 5.82 sq mi |
| Latitude | 45.2309 |
| Longitude | -99.4569 |
| Timezone | Central (CT) |
| Area code | 605 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 73.1% | 49.8% | 41.7% |
| $50k – $100k | 12.5% | 31.7% | 33.8% |
| $100k – $200k | 14.4% | 18.0% | 20.1% |
| Over $200k | 0.0% | 0.5% | 4.4% |
Demographics & statistics
190
Population
1
People per sq mi
60.3
Median age
$46,691
Median household income
$27,883
Per capita income
$0
Median home value
$0
Median monthly rent
85.2%
Home ownership
27.4%
Poverty rate
0.0%
Unemployment
81
Housing units
26.1%
Bachelor's or higher
Age distribution
Male
Female
13
Under 5
13
5
5–9
5
3
10–14
3
3
15–19
3
12
25–34
13
7
35–44
8
2
45–54
3
0
55–59
1
13
60–64
14
14
65–74
14
16
75–84
18
3
85+
4
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 48 | 25.3% |
| 18 and over | 142 | 74.7% |
| 65 and over | 69 | 36.3% |
| Median age | 60.3 years | |
Race & ethnicity
White
100%
| Group | Count | % |
|---|---|---|
| White | 190 | 100% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 73.1% | 49.8% | 41.7% |
| $50k – $100k | 12.5% | 31.7% | 33.8% |
| $100k – $200k | 14.4% | 18.0% | 20.1% |
| Over $200k | 0.0% | 0.5% | 4.4% |
Under $10k
9.9%
$10k–$15k
8.6%
$15k–$25k
13.6%
$25k–$35k
3.7%
$35k–$50k
21.0%
$50k–$75k
12.3%
$75k–$100k
8.6%
$100k–$150k
8.6%
$150k–$200k
13.6%
| Range | % of households |
|---|---|
| Under $10k | 9.9% |
| $10k–$15k | 8.6% |
| $15k–$25k | 13.6% |
| $25k–$35k | 3.7% |
| $35k–$50k | 21.0% |
| $50k–$75k | 12.3% |
| $75k–$100k | 8.6% |
| $100k–$150k | 8.6% |
| $150k–$200k | 13.6% |
| Median income | $46,691 |
Housing
Home values
Under $50k
56.5%
$50k–$100k
2.9%
$100k–$150k
13.0%
$150k–$200k
10.1%
$200k–$300k
4.3%
$300k–$500k
13.0%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $0 |
| Median rent / month | $0 |
| Owner occupied | 85.2% |
| Renter occupied | 14.8% |
| Vacant | 12.9% |
| Single-family detached | 96.8% |
| Large apartment buildings | 0.0% |
| Mobile homes | 3.2% |
| Median rooms | 7.3 |
| Avg household size (owned) | 2.48 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 4.3% |
| 2000–2009 | 0.0% |
| 1990–1999 | 3.2% |
| 1980–1989 | 0.0% |
| 1970–1979 | 32.3% |
| 1960–1969 | 21.5% |
| 1950–1959 | 22.6% |
| 1940–1949 | 8.6% |
| 1939 or earlier | 7.5% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 2.2% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 17.2% |
| 3 bedrooms | 33.3% |
| 4 bedrooms | 36.6% |
| 5+ bedrooms | 10.8% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 2.5% |
| 1 vehicle | 17.3% |
| 2 vehicles | 27.2% |
| 3 or more | 53.1% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 13.6% |
| Propane / LP gas | 65.4% |
| Fuel oil | 17.3% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 62 | 76.5% |
| Cohabiting couple | 0 | 0.0% |
| Male householder, no spouse | 8 | 9.9% |
| Female householder, no spouse | 11 | 13.6% |
| Households with children under 18 | 14 | 17.3% |
| Households with seniors (65+) | 49 | 60.5% |
| Average household size | 2.35 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 14.1% | 4.3% |
| Married | 85.9% | 80.0% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 15.7% |
| Divorced | 0.0% | 0.0% |
Education
Less than 9th grade
6.3%
Some HS, no diploma
0.0%
HS graduate
28.2%
Some college, no degree
17.6%
Associate's degree
21.8%
Bachelor's degree
26.1%
Graduate / professional
0.0%
| Metric | % |
|---|---|
| HS diploma or higher | 93.7% |
| Bachelor's or higher | 26.1% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 5 | 19.2% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 11 | 42.3% |
| High school | 10 | 38.5% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Agriculture & mining
45.7%
Education & healthcare
17.1%
Transportation & utilities
15.7%
Construction
8.6%
Retail trade
4.3%
Public administration
4.3%
Manufacturing
2.9%
Finance & real estate
1.4%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 30.0% |
| Service | 14.3% |
| Sales & office | 21.4% |
| Natural resources & construction | 27.1% |
| Production & transportation | 7.1% |
Employment type
| Type | % |
|---|---|
| Private sector | 45.7% |
| Government | 20.0% |
| Self-employed | 34.3% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 38.6% |
| Carpool | 25.7% |
| Public transit | 0.0% |
| Walk | 15.7% |
| Work from home | 20.0% |
| Other means | 0.0% |
| Avg commute (minutes) | 18.2 |
Poverty
All people
27.4%
Under 18 years
58.3%
18 and over
16.9%
Married-couple families
11.3%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 48.1% |
| Retirement income | 33.3% |
| Supplemental Security | 0.0% |
| Cash public assistance | 3.7% |
| Food stamps / SNAP | 8.6% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 33.9% |
| High blood pressure | 38.3% |
| High cholesterol | 34.9% |
| Diabetes | 11.4% |
| Heart disease | 9.8% |
| Stroke | 4.2% |
| Asthma | 8.3% |
| Arthritis | 29.6% |
| Kidney disease | 3.8% |
| Pulmonary disease | 7.4% |
| Cancer | 9.7% |
| Behavior / access | % |
|---|---|
| Smoking | 16.6% |
| Binge drinking | 16.6% |
| No physical activity | 25.1% |
| Less than 7 hrs sleep | 27.9% |
| Depression | 13.8% |
| Fair or poor health | 13.1% |
| Poor mental health | 9.0% |
| Poor physical health | 10.0% |
| No health insurance | 10.8% |
| Visited doctor (checkup) | 78.1% |
| Visited dentist | 68.4% |
| Cholesterol screening | 93.0% |
| Teeth loss | 14.6% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 8 | 5.6% |
| Disability | % |
|---|---|
| Any disability | 18.4% |
| Under 18 | 0.0% |
| 18–64 years | 0.0% |
| 65 and over | 50.7% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 64.2% |
| Public insurance | 57.4% |
| No insurance | 0.0% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 164 | 86.3% |
| Spanish | 7 | 4.3% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 7 | 4.3% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 190 | 100.0% |
| Born in same state | 190 | 100.0% |
| Born in different state | 152 | 80.0% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Polish | 22 | 11.6% |
| Italian | 7 | 3.7% |
| Ancestry | Count | % |
|---|---|---|
| French | 1 | 0.5% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 42.6% |
| Internet access | 86.4% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 57466
What city is ZIP code 57466 in?
ZIP code 57466 is primarily assigned to Onaka, South Dakota.
What county is ZIP code 57466 in?
ZIP code 57466 falls within Faulk County, South Dakota.
Does ZIP code 57466 have an older population?
36% of residents in ZIP code 57466 are 65 or older, above the national average of ~17%.
What is the poverty rate in ZIP code 57466?
27% of residents in ZIP code 57466 live below the poverty line, above the national average.
Does ZIP code 57466 have a large retiree population?
48% of households in ZIP code 57466 receive Social Security income, suggesting a significant retiree or disability population.
Is ZIP code 57466 mostly owner-occupied?
85% of occupied units in ZIP code 57466 are owner-occupied, well above the national average.
What timezone is ZIP code 57466 in?
ZIP code 57466 observes the CST timezone.