Santa Monica, CA vs Seaside, CA

The cost of living difference between Santa Monica, CA and Seaside, CA is dramatic. Seaside is 55.8% cheaper than Santa Monica, a gap that translates to thousands of dollars per year in household expenses. Santa Monica has a cost index of 259 while Seaside sits at 167, 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 Santa Monica is $2,338/month compared to $2,314/month in Seaside — a 1% difference. Home values follow the same pattern: Seaside is more affordable at $692,600 median vs $1,810,200.

Median household income in Santa Monica is $109,739 compared to $82,303 in Seaside (+33.3%). The higher salaries in Santa Monica partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Santa Monica spend roughly 25.6% of their income on rent, less than the 33.7% in Seaside. The Santa Monica ratio exceeds the commonly recommended 30% threshold, which can put pressure on household budgets.

Climate-wise, Santa Monica is notably warmer with an average of 62.8°F compared to 57.3°F in Seaside. Seaside receives more rainfall at 16.2" per year compared to 13.5" in Santa Monica.