ZIP 57278 · Willow Lake
Who lives in ZIP code 57278 (Willow Lake, SD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Willow Lake, SD · Clark County
uszips 2026
People1,011
Median age24.6
Household income$70,208
Home value$220,434
Median rent$808/mo
Poverty6.7%
College degree+25.6%
Commute20 min
Place
- Metro area
- Outside any metro
- Time zone
- Central
- Density
- 3 / sq mi
- Housing units
- 255
County
Share of the ZIP's people in each county.
Age mix
13.4% are 65 or older; 58.1% are adults.
Household income
25.9% of households earn $100K+. Median per person: $37,782.
Education (adults 25+)
56.2% of degrees are in STEM fields.
Race
0.7% Hispanic or Latino (of any race).
Households & family
- Married
- 54.9%
- Never married
- 26.6%
- Divorced
- 7.3%
- Widowed
- 11.2%
- Family size
- 4.37
- Dual-income families
- 74.7%
Housing
- Own their home
- 77.6%
- Rent burden
- 16.3%
- Men / women
- 51% / 49%
Work
- In labor force
- 63.2%
- Unemployment
- 0.0%
- Self-employed
- 24.1%
- Farmers
- 27.6%
Community
- Charitable givers
- 6.9%
- Veterans
- 6.6%
- With a disability
- 7.2%
- No health insurance
- 3.3%
- Limited English
- 0.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.