ZIP 51103 · Sioux City
Who lives in ZIP code 51103 (Sioux City, IA): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Sioux City, IA · Woodbury County
uszips 2026
People16,895
Median age35.5
Household income$58,197
Home value$139,168
Median rent$906/mo
Poverty21.0%
College degree+18.0%
Commute21 min
Place
- Metro area
- Sioux City, IA-NE-SD
- Wider region
- Sioux City-Le Mars, IA-NE-SD
- Time zone
- Central
- Density
- 541 / sq mi
- Housing units
- 6,402
County
Share of the ZIP's people in each county.
Age mix
16.2% are 65 or older; 74.1% are adults.
Household income
25.4% of households earn $100K+. Median per person: $31,406.
Education (adults 25+)
31.0% of degrees are in STEM fields.
Race
36.9% Hispanic or Latino (of any race).
Households & family
- Married
- 36.9%
- Never married
- 42.8%
- Divorced
- 15.2%
- Widowed
- 5.0%
- Family size
- 3.23
- Dual-income families
- 54.9%
Housing
- Own their home
- 65.6%
- Rent burden
- 31.0%
- Men / women
- 49% / 51%
Work
- In labor force
- 64.6%
- Unemployment
- 3.4%
- Self-employed
- 7.4%
- Farmers
- 0.0%
Community
- Charitable givers
- 10.0%
- Veterans
- 5.1%
- With a disability
- 15.2%
- No health insurance
- 11.4%
- Limited English
- 7.4%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.