Altadena, CA vs Mill Valley, CA

The cost of living difference between Altadena, CA and Mill Valley, CA is dramatic. Altadena is 35.7% cheaper than Mill Valley, a gap that translates to thousands of dollars per year in household expenses. Altadena has a cost index of 196 while Mill Valley sits at 306, 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 Altadena is $2,250/month compared to $3,313/month in Mill Valley — a 32% difference. Home values follow the same pattern: Altadena is more affordable at $1,073,500 median vs $2,000,001.

Median household income in Altadena is $129,123 compared to $208,466 in Mill Valley (-38.1%). While Mill Valley is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Altadena spend roughly 20.9% of their income on rent, more than the 19.1% in Mill Valley.