ZIP 57751 · Keystone
Who lives in ZIP code 57751 (Keystone, SD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Keystone, SD · Pennington County
uszips 2026
People893
Median age54.2
Household income$97,969
Home value$496,748
Median rent$600/mo
Poverty4.6%
College degree+43.1%
Commute34 min
Place
- Metro area
- Rapid City, SD
- Wider region
- Rapid City-Spearfish, SD
- Time zone
- Mountain
- Density
- 8 / sq mi
- Housing units
- 327
Spans 2 counties
Share of the ZIP's people in each county.
Age mix
23.4% are 65 or older; 80.5% are adults.
Household income
48.0% of households earn $100K+. Median per person: $45,833.
Education (adults 25+)
51.5% of degrees are in STEM fields.
Race
9.0% Hispanic or Latino (of any race).
Households & family
- Married
- 64.6%
- Never married
- 22.6%
- Divorced
- 11.0%
- Widowed
- 1.8%
- Family size
- 2.98
- Dual-income families
- 71.4%
Housing
- Own their home
- 85.6%
- Rent burden
- 13.9%
- Men / women
- 54% / 46%
Work
- In labor force
- 66.0%
- Unemployment
- 2.9%
- Self-employed
- 12.8%
- Farmers
- 0.0%
Community
- Charitable givers
- 14.9%
- Veterans
- 16.6%
- With a disability
- 8.3%
- No health insurance
- 12.5%
- Limited English
- 0.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.