Castro Valley, CA vs Millbrae, CA

The cost of living difference between Castro Valley, CA and Millbrae, CA is dramatic. Castro Valley is 32.7% cheaper than Millbrae, a gap that translates to thousands of dollars per year in household expenses. Castro Valley has a cost index of 204 while Millbrae sits at 303, making this one of the more striking comparisons on our site. Relocating between these cities would require a serious reassessment of budget and lifestyle expectations.

On the housing front, median rent in Castro Valley is $2,499/month compared to $3,401/month in Millbrae — a 27% difference. Home values follow the same pattern: Castro Valley is more affordable at $1,058,200 median vs $1,929,700.

Median household income in Castro Valley is $138,069 compared to $157,567 in Millbrae (-12.4%). Millbrae does offer higher incomes, but the salary premium barely offsets the higher cost of living, leaving residents with a tighter budget. Looking at affordability, residents of Castro Valley spend roughly 21.7% of their income on rent, less than the 25.9% in Millbrae.