ZIP 51108 · Sioux City
Who lives in ZIP code 51108 (Sioux City, IA): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Sioux City, IA · Plymouth County
uszips 2026
People5,960
Median age37.6
Household income$81,205
Home value$169,914
Median rent$1,350/mo
Poverty6.5%
College degree+28.7%
Commute18 min
Place
- Metro area
- Le Mars, IA (micro)
- Wider region
- Sioux City-Le Mars, IA-NE-SD
- Time zone
- Central
- Density
- 50 / sq mi
- Housing units
- 2,160
Spans 2 counties
Share of the ZIP's people in each county.
Age mix
16.8% are 65 or older; 67.7% are adults.
Household income
39.0% of households earn $100K+. Median per person: $45,840.
Education (adults 25+)
48.8% of degrees are in STEM fields.
Race
18.8% Hispanic or Latino (of any race).
Households & family
- Married
- 59.7%
- Never married
- 26.2%
- Divorced
- 8.8%
- Widowed
- 5.2%
- Family size
- 3.30
- Dual-income families
- 56.0%
Housing
- Own their home
- 83.3%
- Rent burden
- 34.1%
- Men / women
- 54% / 46%
Work
- In labor force
- 63.2%
- Unemployment
- 5.6%
- Self-employed
- 10.2%
- Farmers
- 3.4%
Community
- Charitable givers
- 22.6%
- Veterans
- 5.1%
- With a disability
- 11.5%
- No health insurance
- 1.8%
- Limited English
- 4.2%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.