ZIP 94546 vs ZIP 94552

This side-by-side compares ZIP 94546 (Castro Valley, CA) and ZIP 94552 (Castro Valley, CA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 94546 has a population of 42,209 at 1,708 people per square mile, while ZIP 94552 has 14,454 at 124 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 94546 reports a median household income of $128,385 against $212,605 in ZIP 94552, with per-capita income of $57,324 vs $78,286. The share of adults holding a bachelor's degree or higher is 41.7% in 94546 and 61.0% in 94552. Poverty rate reads 6.6% vs 6.5%, and unemployment 3.7% vs 4.2% — 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 $1,043,500 in 94546 versus $1,394,300 in 94552, with median rent of $2,539 and $3,197 per month respectively. Homeownership rate is 66.3% vs 93.2%. 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.