Interlachen, FL vs St. Augustine South, FL

The cost of living difference between Interlachen, FL and St. Augustine South, FL is dramatic. Interlachen is 35.6% cheaper than St. Augustine South, a gap that translates to thousands of dollars per year in household expenses. Interlachen has a cost index of 68 while St. Augustine South sits at 105, 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 Interlachen is $778/month compared to $1,452/month in St. Augustine South — a 46% difference. Home values follow the same pattern: Interlachen is more affordable at $100,500 median vs $319,200.

Median household income in Interlachen is $48,000 compared to $74,873 in St. Augustine South (-35.9%). While St. Augustine South is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Interlachen spend roughly 19.5% of their income on rent, less than the 23.3% in St. Augustine South.

Climate-wise, both cities share similar average temperatures (69.3°F vs 71.4°F). Interlachen receives more rainfall at 48.3" per year compared to 47.6" in St. Augustine South.