Foster City, CA vs Tracy, CA

The cost of living difference between Foster City, CA and Tracy, CA is dramatic. Tracy is 81% cheaper than Foster City, a gap that translates to thousands of dollars per year in household expenses. Foster City has a cost index of 293 while Tracy sits at 162, 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 Foster City is $3,501/month compared to $2,325/month in Tracy — a 51% difference. Home values follow the same pattern: Tracy is more affordable at $653,900 median vs $1,774,500.

Median household income in Foster City is $193,633 compared to $118,253 in Tracy (+63.7%). The higher salaries in Foster City partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Foster City spend roughly 21.7% of their income on rent, less than the 23.6% in Tracy.

Climate-wise, Tracy is notably warmer with an average of 63°F compared to 58.7°F in Foster City. Foster City receives more rainfall at 19.6" per year compared to 13.5" in Tracy.