ZIP 57730 · Custer
Who lives in ZIP code 57730 (Custer, SD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Custer, SD · Custer County
uszips 2026
People5,596
Median age57.9
Household income$83,469
Home value$358,464
Median rent$1,087/mo
Poverty10.0%
College degree+34.0%
Commute26 min
Place
- Metro area
- Rapid City, SD
- Wider region
- Rapid City-Spearfish, SD
- Time zone
- Mountain
- Density
- 4 / sq mi
- Housing units
- 2,733
Spans 2 counties
Share of the ZIP's people in each county.
Age mix
36.4% are 65 or older; 86.4% are adults.
Household income
33.6% of households earn $100K+. Median per person: $41,084.
Education (adults 25+)
47.9% of degrees are in STEM fields.
Race
2.3% Hispanic or Latino (of any race).
Households & family
- Married
- 67.7%
- Never married
- 17.4%
- Divorced
- 7.5%
- Widowed
- 7.3%
- Family size
- 2.27
- Dual-income families
- 47.3%
Housing
- Own their home
- 80.4%
- Rent burden
- 14.9%
- Men / women
- 48% / 52%
Work
- In labor force
- 50.7%
- Unemployment
- 1.8%
- Self-employed
- 14.3%
- Farmers
- 2.6%
Community
- Charitable givers
- 19.2%
- Veterans
- 13.2%
- With a disability
- 20.3%
- No health insurance
- 12.8%
- Limited English
- 0.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.