57634 ZIP Code — Keldron, SD
Corson County, South Dakota
ZIP code 57634 is located in Keldron, South Dakota, within Corson County. It covers approximately 201.52 square miles and serves a population of 157 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.
157
population
201.52
sq mi land
Standard
ZIP type
Mountain (MT)
timezone
57634 ZIP code map
Cities in ZIP code 57634
Below are the cities the US Postal Service accepts for ZIP code 57634. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Keldron | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 157 |
| Population density | 1 / sq mi |
| State FIPS | 46 |
| County FIPS | 031 |
| Geography | |
|---|---|
| Land area | 201.52 sq mi |
| Water area | 0.53 sq mi |
| Latitude | 45.7884 |
| Longitude | -101.8433 |
| 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 | 50.0% | 61.0% | 41.7% |
| $50k – $100k | 24.1% | 23.8% | 33.8% |
| $100k – $200k | 25.9% | 12.9% | 20.1% |
| Over $200k | 0.0% | 2.3% | 4.4% |
Demographics & statistics
157
Population
1
People per sq mi
23.7
Median age
$51,042
Median household income
$16,229
Per capita income
$152,100
Median home value
$0
Median monthly rent
81.8%
Home ownership
47.8%
Poverty rate
0.0%
Unemployment
36
Housing units
8.0%
Bachelor's or higher
Age distribution
Male
Female
12
Under 5
12
12
5–9
12
9
10–14
9
2
15–19
3
5
20–24
6
13
25–34
14
6
35–44
6
4
45–54
5
5
55–59
5
3
65–74
4
5
85+
5
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 71 | 45.2% |
| 18 and over | 86 | 54.8% |
| 65 and over | 17 | 10.8% |
| Median age | 23.7 years | |
Race & ethnicity
White
56.7%
American Indian / Alaska Native
28%
Two or more races
15.3%
| Group | Count | % |
|---|---|---|
| White | 89 | 56.7% |
| American Indian / Alaska Native | 44 | 28% |
| Two or more races | 24 | 15.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 50.0% | 61.0% | 41.7% |
| $50k – $100k | 24.1% | 23.8% | 33.8% |
| $100k – $200k | 25.9% | 12.9% | 20.1% |
| Over $200k | 0.0% | 2.3% | 4.4% |
Under $10k
21.2%
$10k–$15k
3.0%
$35k–$50k
18.2%
$50k–$75k
18.2%
$75k–$100k
24.2%
$200k+
15.2%
| Range | % of households |
|---|---|
| Under $10k | 21.2% |
| $10k–$15k | 3.0% |
| $35k–$50k | 18.2% |
| $50k–$75k | 18.2% |
| $75k–$100k | 24.2% |
| $200k+ | 15.2% |
| Median income | $51,042 |
Housing
Home values
Under $50k
3.7%
$50k–$100k
18.5%
$100k–$150k
25.9%
$150k–$200k
22.2%
$200k–$300k
29.6%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $152,100 |
| Median rent / month | $0 |
| Owner occupied | 81.8% |
| Renter occupied | 18.2% |
| Vacant | 21.4% |
| Single-family detached | 88.1% |
| Large apartment buildings | 0.0% |
| Mobile homes | 11.9% |
| Median rooms | 8.0 |
| Avg household size (owned) | 4.41 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 28.6% |
| 1990–1999 | 0.0% |
| 1980–1989 | 11.9% |
| 1970–1979 | 21.4% |
| 1960–1969 | 2.4% |
| 1950–1959 | 11.9% |
| 1940–1949 | 0.0% |
| 1939 or earlier | 23.8% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 9.5% |
| 3 bedrooms | 40.5% |
| 4 bedrooms | 2.4% |
| 5+ bedrooms | 47.6% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 0.0% |
| 2 vehicles | 3.0% |
| 3 or more | 97.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 18.2% |
| Propane / LP gas | 66.7% |
| Fuel oil | 15.2% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 27 | 81.8% |
| Cohabiting couple | 0 | 0.0% |
| Male householder, no spouse | 5 | 15.2% |
| Female householder, no spouse | 1 | 3.0% |
| Households with children under 18 | 18 | 54.5% |
| Households with seniors (65+) | 15 | 45.5% |
| Average household size | 4.76 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 26.7% | 0.0% |
| Married | 48.3% | 96.8% |
| Separated | 0.0% | 0.0% |
| Widowed | 16.7% | 3.2% |
| Divorced | 8.3% | 0.0% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
0.0%
HS graduate
38.7%
Some college, no degree
33.3%
Associate's degree
20.0%
Bachelor's degree
8.0%
Graduate / professional
0.0%
| Metric | % |
|---|---|
| HS diploma or higher | 100.0% |
| Bachelor's or higher | 8.0% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 8 | 15.4% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 30 | 57.7% |
| High school | 9 | 17.3% |
| College / grad school | 5 | 9.6% |
Employment
Industry of employment
Agriculture & mining
73.6%
Education & healthcare
15.1%
Retail trade
11.3%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 88.7% |
| Service | 0.0% |
| Sales & office | 0.0% |
| Natural resources & construction | 0.0% |
| Production & transportation | 11.3% |
Employment type
| Type | % |
|---|---|
| Private sector | 60.4% |
| Government | 0.0% |
| Self-employed | 39.6% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 26.4% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Work from home | 73.6% |
| Other means | 0.0% |
| Avg commute (minutes) | 0.0 |
Poverty
All people
47.8%
Under 18 years
63.4%
18 and over
34.9%
Married-couple families
48.1%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 27.3% |
| Retirement income | 0.0% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 0.0% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 39.8% |
| High blood pressure | 42.5% |
| High cholesterol | 38.2% |
| Diabetes | 16.2% |
| Heart disease | 12.7% |
| Stroke | 6.3% |
| Asthma | 10.8% |
| Arthritis | 34.3% |
| Kidney disease | 5.2% |
| Pulmonary disease | 12.8% |
| Cancer | 8.7% |
| Behavior / access | % |
|---|---|
| Smoking | 26.4% |
| Binge drinking | 15.5% |
| No physical activity | 34.4% |
| Less than 7 hrs sleep | 28.7% |
| Depression | 16.8% |
| Fair or poor health | 23.1% |
| Poor mental health | 12.2% |
| Poor physical health | 15.7% |
| No health insurance | 15.5% |
| Visited doctor (checkup) | 77.8% |
| Visited dentist | 52.7% |
| Cholesterol screening | 88.2% |
| Teeth loss | 25.6% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 6 | 7.0% |
| Disability | % |
|---|---|
| Any disability | 10.2% |
| Under 18 | 0.0% |
| 18–64 years | 0.0% |
| 65 and over | 94.1% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 82.2% |
| Public insurance | 24.2% |
| No insurance | 3.8% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 133 | 84.7% |
| Spanish | 0 | 0.0% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 157 | 100.0% |
| Born in same state | 157 | 100.0% |
| Born in different state | 58 | 36.9% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Arab | 73 | 46.5% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 21.0% |
| Internet access | 100.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 57634
What city is ZIP code 57634 in?
ZIP code 57634 is primarily assigned to Keldron, South Dakota.
What county is ZIP code 57634 in?
ZIP code 57634 falls within Corson County, South Dakota.
What is the poverty rate in ZIP code 57634?
48% of residents in ZIP code 57634 live below the poverty line, above the national average.
Is ZIP code 57634 family-oriented?
45% of residents in ZIP code 57634 are under 18, reflecting a younger, family-oriented community.
How educated is the population of ZIP code 57634?
8% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
Is ZIP code 57634 mostly owner-occupied?
82% of occupied units in ZIP code 57634 are owner-occupied, well above the national average.
What timezone is ZIP code 57634 in?
ZIP code 57634 observes the MST timezone.