ZIP 51101 · Sioux City
Who lives in ZIP code 51101 (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
People1,031
Median age40.8
Household income$15,300
Home value—
Median rent$708/mo
Poverty48.1%
College degree+10.9%
Commute11 min
Place
- Metro area
- Sioux City, IA-NE-SD
- Wider region
- Sioux City-Le Mars, IA-NE-SD
- Time zone
- Central
- Density
- 331 / sq mi
- Housing units
- 640
County
Share of the ZIP's people in each county.
Age mix
17.2% are 65 or older; 90.0% are adults.
Household income
3.2% of households earn $100K+. Median per person: $16,653.
Education (adults 25+)
67.7% of degrees are in STEM fields.
Race
10.9% Hispanic or Latino (of any race).
Households & family
- Married
- 9.9%
- Never married
- 43.4%
- Divorced
- 42.2%
- Widowed
- 4.5%
- Family size
- 1.86
- Dual-income families
- 8.4%
Housing
- Own their home
- 3.4%
- Rent burden
- 59.5%
- Men / women
- 58% / 42%
Work
- In labor force
- 46.2%
- Unemployment
- 14.5%
- Self-employed
- 0.0%
- Farmers
- 0.0%
Community
- Charitable givers
- 11.8%
- Veterans
- 8.4%
- With a disability
- 46.4%
- No health insurance
- 12.1%
- Limited English
- 2.3%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.