Greenwich, CT vs Groton, CT

The cost of living difference between Greenwich, CT and Groton, CT is dramatic. Groton is 136.2% cheaper than Greenwich, a gap that translates to thousands of dollars per year in household expenses. Greenwich has a cost index of 221 while Groton sits at 94, 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 Greenwich is $2,121/month compared to $1,179/month in Groton — a 80% difference. Home values follow the same pattern: Groton is more affordable at $278,900 median vs $1,486,100.

Median household income in Greenwich is $136,154 compared to $69,811 in Groton (+95%). The higher salaries in Greenwich partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Greenwich spend roughly 18.7% of their income on rent, less than the 20.3% in Groton.