ZIP 51003 · Alton
Who lives in ZIP code 51003 (Alton, IA): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Alton, IA · Sioux County
uszips 2026
People1,938
Median age37.1
Household income$101,250
Home value$232,790
Median rent$813/mo
Poverty2.0%
College degree+29.2%
Commute21 min
Place
- Metro area
- Outside any metro
- Time zone
- Central
- Density
- 14 / sq mi
- Housing units
- 730
County
Share of the ZIP's people in each county.
Age mix
12.6% are 65 or older; 73.8% are adults.
Household income
51.4% of households earn $100K+. Median per person: $48,511.
Education (adults 25+)
25.1% of degrees are in STEM fields.
Race
5.4% Hispanic or Latino (of any race).
Households & family
- Married
- 66.9%
- Never married
- 25.0%
- Divorced
- 3.6%
- Widowed
- 4.4%
- Family size
- 3.14
- Dual-income families
- 78.6%
Housing
- Own their home
- 87.1%
- Rent burden
- 12.1%
- Men / women
- 51% / 49%
Work
- In labor force
- 79.5%
- Unemployment
- 2.0%
- Self-employed
- 23.7%
- Farmers
- 13.2%
Community
- Charitable givers
- 28.9%
- Veterans
- 3.4%
- With a disability
- 8.2%
- No health insurance
- 1.1%
- Limited English
- 1.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.