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Whittier city, CA

ZIP 90603 — People & Community

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

Upper Middle ClassLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 90603

90603 has a population of 20,361 with a median age of 41.3 yrs (46.9% male).

Race & Ethnicity
White
49.0%-21% vs US avg
x
Black
0.5%-96% vs US avg
x
Asian
5.7%-4% vs US avg
x
Hispanic
58.1%+211% vs US avg
x
Age Groups
0–17
21.6%-2% vs US avg
x
18–64
61.5%-0% vs US avg
x
65+
16.9%+4% vs US avg
x
Education
Less than HS
6.5%-42% vs US avg
x
High school
27.0%+3% vs US avg
x
Some college
33.8%+17% vs US avg
x
Bachelor's+
32.8%-3% vs US avg
x
Marital Status
Married
48.2%+0% vs US avg
x
Never married
34.8%+3% vs US avg
x
Divorced
11.0%+7% vs US avg
x
Widowed / Separated
6.0%
x
Diversity Index
42/100

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

Social & household profile

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

Poverty Rate
3.7%-68% vs US avg
x
Foreign Born
5.5%-61% vs US avg
x
Veterans
3.9%-35% vs US avg
x
Disability
11.1%-17% vs US avg
x
Single Parent
5.5%-32% vs US avg
x
Recent Births
19.5%+237% vs US avg
x
Top ancestry
GermanIrishEnglish

Health & Community Indicators in 90603

Poverty Rate
3.7%-68% vs US avg
x
Veterans
3.9%-35% vs US avg
x
Foreign Born
5.5%-61% vs US avg
x
Single Parent
5.5%-32% vs US avg
x
Disability
11.1%-17% vs US avg
x
Uninsured
4.6%-42% vs US avg
x
SNAP Benefits
3.8%-68% vs US avg
x
Private School
0.3%-97% vs US avg
x
Recent Births
19.5%+237% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population20,361
Median age41.3
Poverty rate3.7%
Demographics statistics
Demographics
White49.0%
Hispanic58.1%
Black0.5%
Asian5.7%
Foreign-born5.5%