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ZIP 51104 · Sioux City

Who lives in ZIP code 51104 (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
People23,197
Median age37.5
Household income$75,362
Home value$210,299
Median rent$998/mo
Poverty10.4%
College degree+28.9%
Commute19 min

Place

Metro area
Sioux City, IA-NE-SD
Wider region
Sioux City-Le Mars, IA-NE-SD
Time zone
Central
Density
1,198 / sq mi
Housing units
8,729

County

Woodbury100%

Share of the ZIP's people in each county.

Age mix

Under 1013.2%
10–1913.1%
20s15.5%
30s11.4%
40s14.4%
50s9.2%
60s12.9%
70s6.2%
80+3.9%

15.6% are 65 or older; 76.3% are adults.

Household income

Under $25K13.2%
$25K–50K18.2%
$50K–75K18.7%
$75K–100K13.0%
$100K–150K18.2%
$150K+18.9%

37.1% of households earn $100K+. Median per person: $41,103.

Education (adults 25+)

Less than high school10.8%
High school28.8%
Some college31.4%
Bachelor's20.3%
Graduate8.6%

31.9% of degrees are in STEM fields.

Race

White66.1%
Black5.5%
Asian3.1%
Native American1.9%
Pacific Islander2.5%
Other4.6%
Two or more16.4%

20.3% Hispanic or Latino (of any race).

Households & family

Married
45.2%
Never married
38.7%
Divorced
10.9%
Widowed
5.2%
Family size
3.04
Dual-income families
58.5%

Housing

Own their home
64.5%
Rent burden
26.3%
Men / women
49% / 51%

Work

In labor force
69.6%
Unemployment
4.6%
Self-employed
10.1%
Farmers
0.4%

Community

Charitable givers
24.3%
Veterans
5.1%
With a disability
12.5%
No health insurance
8.7%
Limited English
5.9%

Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.

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