ZIP 94528 · Diablo
Who lives in ZIP code 94528 (Diablo, CA): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Diablo, CA · Contra Costa County
uszips 2026
People1,049
Median age43.0
Household income$207,500
Home value$2,000,001
Median rent—
Poverty8.1%
College degree+79.8%
Commute42 min
Place
- Metro area
- San Francisco-Oakland-Fremont, CA
- Wider region
- San Jose-San Francisco-Oakland, CA
- Metro division
- Oakland-Fremont-Berkeley, CA
- Time zone
- Pacific
- Density
- 351 / sq mi
- Housing units
- 424
County
Share of the ZIP's people in each county.
Age mix
22.6% are 65 or older; 75.0% are adults.
Household income
65.6% of households earn $100K+. Median per person: $64,875.
Education (adults 25+)
73.0% of degrees are in STEM fields.
Race
8.1% Hispanic or Latino (of any race).
Households & family
- Married
- 71.8%
- Never married
- 14.9%
- Divorced
- 4.9%
- Widowed
- 8.4%
- Family size
- 2.85
- Dual-income families
- 60.1%
Housing
- Own their home
- 100.0%
- Rent burden
- —
- Men / women
- 43% / 57%
Work
- In labor force
- 52.1%
- Unemployment
- 7.1%
- Self-employed
- 24.5%
- Farmers
- 0.0%
Community
- Charitable givers
- 60.4%
- Veterans
- 11.3%
- With a disability
- 5.4%
- No health insurance
- 3.9%
- Limited English
- 0.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.