San Marcos, TX vs Sienna, TX

The cost of living difference between San Marcos, TX and Sienna, TX is dramatic. San Marcos is 39.1% cheaper than Sienna, a gap that translates to thousands of dollars per year in household expenses. San Marcos has a cost index of 96 while Sienna sits at 158, 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 San Marcos is $1,299/month compared to $2,853/month in Sienna — a 55% difference. Home values follow the same pattern: San Marcos is more affordable at $269,700 median vs $440,600.

Median household income in San Marcos is $51,030 compared to $171,709 in Sienna (-70.3%). While Sienna is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of San Marcos spend roughly 30.5% of their income on rent, more than the 19.9% in Sienna. The Sienna ratio exceeds the commonly recommended 30% threshold, which can put pressure on household budgets.

Climate-wise, both cities share similar average temperatures (69.6°F vs 71.1°F). Sienna receives more rainfall at 49.7" per year compared to 31.3" in San Marcos.