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Sioux City city, IA

ZIP 51103 — People & Community

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Working ClassLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 51103

51103 has a population of 17,145 with a median age of 36.8 yrs (49.0% male).

Race & Ethnicity
White
60.5%-2% vs US avg
x
Black
3.8%-70% vs US avg
x
Asian
4.5%-24% vs US avg
x
Hispanic
31.3%+68% vs US avg
x
Age Groups
0–17
26.2%+19% vs US avg
x
18–64
57.2%-7% vs US avg
x
65+
16.6%+2% vs US avg
x
Education
Less than HS
22.9%+106% vs US avg
x
High school
33.9%+29% vs US avg
x
Some college
26.1%-10% vs US avg
x
Bachelor's+
17.1%-49% vs US avg
x
Marital Status
Married
41.8%-13% vs US avg
x
Never married
38.0%+12% vs US avg
x
Divorced
14.8%+43% vs US avg
x
Widowed / Separated
5.4%
x
Diversity Index
53/100

Higher = more diverse (Simpson index from race/ethnicity)

Social & household profile

Poverty, nativity, veterans, disability, family structure, and births (ACS).

Poverty Rate
18.7%+63% vs US avg
x
Foreign Born
30.2%+117% vs US avg
x
Veterans
5.6%-6% vs US avg
x
Disability
16.6%+24% vs US avg
x
Single Parent
15.8%+95% vs US avg
x
Recent Births
55.4%+855% vs US avg
x
Top ancestry
GermanIrishAmerican

Health & Community Indicators in 51103

Poverty Rate
18.7%+63% vs US avg
x
Veterans
5.6%-6% vs US avg
x
Foreign Born
30.2%+117% vs US avg
x
Single Parent
15.8%+95% vs US avg
x
Disability
16.6%+24% vs US avg
x
Uninsured
9.3%+16% vs US avg
x
SNAP Benefits
20.4%+74% vs US avg
x
Private School
0.2%-98% vs US avg
x
Recent Births
55.4%+855% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population17,145
Median age36.8
Poverty rate18.7%
Demographics statistics
Demographics
White60.5%
Hispanic31.3%
Black3.8%
Asian4.5%
Foreign-born30.2%