ZIP 57779 · Saint Onge
Who lives in ZIP code 57779 (Saint Onge, SD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Saint Onge, SD · Lawrence County
uszips 2026
People347
Median age53.3
Household income—
Home value—
Median rent—
Poverty0.0%
College degree+67.4%
Commute29 min
Place
- Metro area
- Spearfish, SD (micro)
- Wider region
- Rapid City-Spearfish, SD
- Time zone
- Mountain
- Density
- 3 / sq mi
- Housing units
- 174
Spans 2 counties
Share of the ZIP's people in each county.
Age mix
5.8% are 65 or older; 95.7% are adults.
Household income
54.6% of households earn $100K+. Median per person: —.
Education (adults 25+)
64.4% of degrees are in STEM fields.
Race
0.0% Hispanic or Latino (of any race).
Households & family
- Married
- 75.8%
- Never married
- 24.2%
- Divorced
- 0.0%
- Widowed
- 0.0%
- Family size
- 2.29
- Dual-income families
- 62.7%
Housing
- Own their home
- 100.0%
- Rent burden
- —
- Men / women
- 42% / 58%
Work
- In labor force
- 77.7%
- Unemployment
- 0.0%
- Self-employed
- 16.7%
- Farmers
- 16.7%
Community
- Charitable givers
- 0.0%
- 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.