ZIP 94030 vs ZIP 94128
Source:
Millbrae, CA — San Francisco, CA
This side-by-side compares ZIP 94030 (Millbrae, CA) and ZIP 94128 (San Francisco, CA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 94030 has a population of 21,536 at 2,454 people per square mile, while ZIP 94128 has 69 at 8 per square mile. That difference in population size and density alone reshapes how every other metric should be interpreted — a higher-income ZIP with 1,200 residents behaves very differently from one with 45,000.
On income and education, ZIP 94030 reports a median household income of $163,476 against — in ZIP 94128, with per-capita income of $78,551 vs —. The share of adults holding a bachelor's degree or higher is 52.7% in 94030 and — in 94128. Poverty rate reads 6.0% vs —, and unemployment 5.7% vs — — these four fields alone drive most of the difference in the scorecard grades you will see for each ZIP.
Housing separates these two ZIPs further: median home value sits at $1,934,900 in 94030 versus — in 94128, with median rent of $3,272 and — per month respectively. Homeownership rate is 60.8% vs —. When reading the comparison table below, focus on paired metrics rather than single winners — a ZIP with lower home values and lower income is not strictly "worse" if rent-to-income ratios and commute times land in the same zone. Every value is pulled from the exact same ACS table so the two columns are genuinely comparable.
Compare different ZIP codes:
| Metric | 94030 Millbrae, CA | 94128 San Francisco, CA |
|---|---|---|
| Population | 21,536 | 69 |
| Median Household Income | $163,476 | — |
| Per Capita Income | $78,551 | — |
| Median Age | 43.7 | — |
| Bachelor's Degree or Higher | 52.7% | — |
| Poverty Rate | 6.0% | — |
| Unemployment Rate | 5.7% | — |
| Median Home Value | $1,934,900 | — |
| Median Rent (monthly) | $3,272 | — |
| Homeownership Rate | 60.8% | — |
| Population Density (per sq mi) | 2,454 | 8 |
Values highlighted in green indicate the better metric where applicable. Source: U.S. Census Bureau ACS 2023.
What are common questions about this comparison?
How do ZIP codes 94030 and 94128 compare?▼
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All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.