57766 ZIP Code — Oral, SD
Fall River County, South Dakota
ZIP code 57766 is located in Oral, South Dakota, within Fall River County. It covers approximately 142.54 square miles and serves a population of 123 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.
123
population
142.54
sq mi land
Standard
ZIP type
Mountain (MT)
timezone
57766 ZIP code map
Cities in ZIP code 57766
Below are the cities the US Postal Service accepts for ZIP code 57766. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Oral | Preferred |
Nearby ZIP codes
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 123 |
| Population density | 1 / sq mi |
| State FIPS | 46 |
| County FIPS | 047 |
| Geography | |
|---|---|
| Land area | 142.54 sq mi |
| Water area | 0.18 sq mi |
| Latitude | 43.3460 |
| Longitude | -103.2025 |
| Timezone | Mountain (MT) |
| 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 | 29.3% | 48.6% | 41.7% |
| $50k – $100k | 8.6% | 29.9% | 33.8% |
| $100k – $200k | 62.1% | 20.1% | 20.1% |
| Over $200k | 0.0% | 1.4% | 4.4% |
Demographics & statistics
123
Population
1
People per sq mi
64.6
Median age
$0
Median household income
$39,526
Per capita income
$0
Median home value
$0
Median monthly rent
100.0%
Home ownership
18.7%
Poverty rate
0.0%
Unemployment
113
Housing units
10.6%
Bachelor's or higher
Age distribution
Male
Female
15
45–54
21
4
55–59
6
8
60–64
11
24
65–74
32
1
75–84
1
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 0 | 0.0% |
| 18 and over | 123 | 100.0% |
| 65 and over | 58 | 47.2% |
| Median age | 64.6 years | |
Race & ethnicity
White
100%
| Group | Count | % |
|---|---|---|
| White | 123 | 100% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 29.3% | 48.6% | 41.7% |
| $50k – $100k | 8.6% | 29.9% | 33.8% |
| $100k – $200k | 62.1% | 20.1% | 20.1% |
| Over $200k | 0.0% | 1.4% | 4.4% |
$15k–$25k
1.7%
$25k–$35k
25.9%
$35k–$50k
15.5%
$50k–$75k
15.5%
$100k–$150k
27.6%
$150k–$200k
13.8%
| Range | % of households |
|---|---|
| $15k–$25k | 1.7% |
| $25k–$35k | 25.9% |
| $35k–$50k | 15.5% |
| $50k–$75k | 15.5% |
| $100k–$150k | 27.6% |
| $150k–$200k | 13.8% |
| Median income | $0 |
Housing
Home values
Under $50k
41.4%
$50k–$100k
43.1%
$150k–$200k
12.1%
$200k–$300k
3.4%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $0 |
| Median rent / month | $0 |
| Owner occupied | 100.0% |
| Renter occupied | 0.0% |
| Vacant | 48.7% |
| Single-family detached | 38.9% |
| Large apartment buildings | 0.0% |
| Mobile homes | 61.1% |
| Median rooms | 5.1 |
| Avg household size (owned) | 2.12 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.9% |
| 2000–2009 | 6.2% |
| 1990–1999 | 0.0% |
| 1980–1989 | 8.0% |
| 1970–1979 | 55.8% |
| 1960–1969 | 8.8% |
| 1950–1959 | 13.3% |
| 1940–1949 | 0.0% |
| 1939 or earlier | 7.1% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 13.3% |
| 2 bedrooms | 0.9% |
| 3 bedrooms | 83.2% |
| 4 bedrooms | 2.7% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 5.2% |
| 2 vehicles | 12.1% |
| 3 or more | 82.8% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 34.5% |
| Propane / LP gas | 51.7% |
| Wood | 13.8% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 27 | 46.6% |
| Cohabiting couple | 14 | 24.1% |
| Male householder, no spouse | 17 | 29.3% |
| Female householder, no spouse | 0 | 0.0% |
| Households with children under 18 | 0 | 0.0% |
| Households with seniors (65+) | 48 | 82.8% |
| Average household size | 2.12 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 15.4% | 0.0% |
| Married | 40.4% | 38.0% |
| Separated | 0.0% | 18.3% |
| Widowed | 13.5% | 0.0% |
| Divorced | 30.8% | 43.7% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
18.7%
HS graduate
24.4%
Some college, no degree
26.8%
Associate's degree
19.5%
Bachelor's degree
2.4%
Graduate / professional
8.1%
| Metric | % |
|---|---|
| HS diploma or higher | 81.3% |
| Bachelor's or higher | 10.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 0 | 0.0% |
| High school | 0 | 0.0% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Construction
41.7%
Agriculture & mining
36.1%
Education & healthcare
22.2%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 8.3% |
| Service | 0.0% |
| Sales & office | 22.2% |
| Natural resources & construction | 47.2% |
| Production & transportation | 22.2% |
Employment type
| Type | % |
|---|---|
| Private sector | 77.8% |
| Government | 22.2% |
| Self-employed | 0.0% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 91.7% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 8.3% |
| Work from home | 0.0% |
| Other means | 0.0% |
| Avg commute (minutes) | 0.0 |
Poverty
All people
18.7%
Under 18 years
0.0%
18 and over
18.7%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 82.8% |
| Retirement income | 50.0% |
| Supplemental Security | 13.8% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 13.8% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 34.2% |
| High blood pressure | 36.9% |
| High cholesterol | 35.2% |
| Diabetes | 11.2% |
| Heart disease | 8.9% |
| Stroke | 4.0% |
| Asthma | 9.1% |
| Arthritis | 29.8% |
| Kidney disease | 3.7% |
| Pulmonary disease | 7.6% |
| Cancer | 9.1% |
| Behavior / access | % |
|---|---|
| Smoking | 17.7% |
| Binge drinking | 16.9% |
| No physical activity | 24.5% |
| Less than 7 hrs sleep | 27.5% |
| Depression | 15.5% |
| Fair or poor health | 13.5% |
| Poor mental health | 10.1% |
| Poor physical health | 10.4% |
| No health insurance | 11.8% |
| Visited doctor (checkup) | 78.1% |
| Visited dentist | 67.7% |
| Cholesterol screening | 91.0% |
| Teeth loss | 14.7% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 0 | 0.0% |
| Disability | % |
|---|---|
| Any disability | 26.8% |
| Under 18 | 0.0% |
| 18–64 years | 15.4% |
| 65 and over | 39.7% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 61.0% |
| Public insurance | 55.3% |
| No insurance | 21.1% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 123 | 100.0% |
| Spanish | 10 | 8.1% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 10 | 8.1% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 123 | 100.0% |
| Born in same state | 123 | 100.0% |
| Born in different state | 35 | 28.5% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 40 | 32.5% |
| French | 15 | 12.2% |
| Ancestry | Count | % |
|---|---|---|
| English | 8 | 6.5% |
| Arab | 2 | 1.6% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 47.2% |
| Internet access | 86.2% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 57766
What city is ZIP code 57766 in?
ZIP code 57766 is primarily assigned to Oral, South Dakota.
What county is ZIP code 57766 in?
ZIP code 57766 falls within Fall River County, South Dakota.
Does ZIP code 57766 have a large retiree population?
83% of households in ZIP code 57766 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 57766 have an older population?
47% of residents in ZIP code 57766 are 65 or older, above the national average of ~17%.
How educated is the population of ZIP code 57766?
11% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
What is the poverty rate in ZIP code 57766?
19% of residents in ZIP code 57766 live below the poverty line, above the national average.
What timezone is ZIP code 57766 in?
ZIP code 57766 observes the MST timezone.