ZIP 57421 · Amherst
Who lives in ZIP code 57421 (Amherst, SD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Amherst, SD · Marshall County
uszips 2026
People75
Median age16.6
Household income—
Home value—
Median rent—
Poverty0.0%
College degree+91.0%
Commute—
Place
- Metro area
- Outside any metro
- Time zone
- Central
- Density
- 1 / sq mi
- Housing units
- 18
County
Share of the ZIP's people in each county.
Age mix
4.0% are 65 or older; 44.0% are adults.
Household income
100.0% of households earn $100K+. Median per person: $72,250.
Education (adults 25+)
50.0% of degrees are in STEM fields.
Race
0.0% Hispanic or Latino (of any race).
Households & family
- Married
- 73.3%
- Never married
- 26.7%
- Divorced
- 0.0%
- Widowed
- 0.0%
- Family size
- 4.17
- Dual-income families
- 83.3%
Housing
- Own their home
- 100.0%
- Rent burden
- —
- Men / women
- 40% / 60%
Work
- In labor force
- 60.0%
- Unemployment
- 0.0%
- Self-employed
- —
- Farmers
- —
Community
- Charitable givers
- —
- Veterans
- 0.0%
- With a disability
- 0.0%
- No health insurance
- 0.0%
- Limited English
- 0.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.