Amherst ZIP Code List — Marshall County, SD
There is one unique ZIP code in Amherst, South Dakota and it is 57421. Area code: 605.
1
ZIP codes
33.34
sq mi land
0.09
sq mi water
605
area code
Amherst, SD ZIP code map
ZIP codes for Amherst, SD (1)
Demographics & statistics
54
Population
11.1
Median age
$0
Median household income
$22,704
Per capita income
$0
Median home value
$0
Median monthly rent
100.0%
Home ownership
0.0%
Poverty rate
0.0%
Unemployment
10
Housing units
90.0%
Bachelor's or higher
Age distribution
Male
Female
9
5–9
17
3
10–14
5
5
35–44
11
1
60–64
1
1
65–74
1
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 34 | 63.0% |
| 18 and over | 20 | 37.0% |
| 65 and over | 2 | 3.7% |
| Median age | 11.1 years | |
Race & ethnicity
White
100%
| Group | Count | % |
|---|---|---|
| White | 54 | 100% |
Household income
$75k–$100k
20.0%
$100k–$150k
80.0%
| Range | % of households |
|---|---|
| $75k–$100k | 20.0% |
| $100k–$150k | 80.0% |
| Median income | $0 |
Housing
Home values
$150k–$200k
80.0%
$200k–$300k
20.0%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $0 |
| Median rent / month | $0 |
| Owner occupied | 100.0% |
| Renter occupied | 0.0% |
| Vacant | 0.0% |
| Single-family detached | 100.0% |
| Large apartment buildings | 0.0% |
| Mobile homes | 0.0% |
| Median rooms | 0.0 |
| Avg household size (owned) | 5.40 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 0.0% |
| 1990–1999 | 0.0% |
| 1980–1989 | 0.0% |
| 1970–1979 | 20.0% |
| 1960–1969 | 0.0% |
| 1950–1959 | 0.0% |
| 1940–1949 | 0.0% |
| 1939 or earlier | 80.0% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 0.0% |
| 3 bedrooms | 0.0% |
| 4 bedrooms | 80.0% |
| 5+ bedrooms | 20.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 0.0% |
| 2 vehicles | 0.0% |
| 3 or more | 100.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Propane / LP gas | 100.0% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 10 | 100.0% |
| Cohabiting couple | 0 | 0.0% |
| Male householder, no spouse | 0 | 0.0% |
| Female householder, no spouse | 0 | 0.0% |
| Households with children under 18 | 8 | 80.0% |
| Households with seniors (65+) | 2 | 20.0% |
| Average household size | 5.40 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 0.0% | 0.0% |
| Married | 100.0% | 100.0% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 0.0% |
| Divorced | 0.0% | 0.0% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
0.0%
HS graduate
0.0%
Some college, no degree
0.0%
Associate's degree
10.0%
Bachelor's degree
40.0%
Graduate / professional
50.0%
| Metric | % |
|---|---|
| HS diploma or higher | 100.0% |
| Bachelor's or higher | 90.0% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 13 | 38.2% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 21 | 61.8% |
| High school | 0 | 0.0% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Education & healthcare
50.0%
Other services
50.0%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 100.0% |
| Service | 0.0% |
| Sales & office | 0.0% |
| Natural resources & construction | 0.0% |
| Production & transportation | 0.0% |
Employment type
| Type | % |
|---|---|
| Private sector | 50.0% |
| Government | 50.0% |
| Self-employed | 0.0% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 0.0% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Other means | 0.0% |
| Avg commute (minutes) | 0.0 |
Poverty
All people
0.0%
Under 18 years
0.0%
18 and over
0.0%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 0.0% |
| Retirement income | 20.0% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 0.0% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 32.5% |
| High cholesterol | 32.6% |
| Heart disease | 7.6% |
| Stroke | 3.3% |
| Asthma | 8.5% |
| Arthritis | 25.5% |
| Kidney disease | 3.1% |
| Pulmonary disease | 6.2% |
| Cancer | 8.2% |
| Behavior / access | % |
|---|---|
| Binge drinking | 20.1% |
| No physical activity | 21.9% |
| Less than 7 hrs sleep | 26.0% |
| Fair or poor health | 11.0% |
| Poor mental health | 10.1% |
| Poor physical health | 8.8% |
| No health insurance | 11.3% |
| Visited doctor (checkup) | 75.5% |
| Visited dentist | 68.3% |
| Cholesterol screening | 89.0% |
| Teeth loss | 12.4% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 0 | 0.0% |
| Disability | % |
|---|---|
| Any disability | 0.0% |
| Under 18 | 0.0% |
| 18–64 years | 0.0% |
| 65 and over | 0.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 100.0% |
| Public insurance | 3.7% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 54 | 100.0% |
| 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) | 54 | 100.0% |
| Born in same state | 54 | 100.0% |
| Born in different state | 17 | 31.5% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 42 | 77.8% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 2 | 3.7% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 18.5% |
| Internet access | 100.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.