Cos Cob, CT vs Old Mystic, CT

The cost of living difference between Cos Cob, CT and Old Mystic, CT is dramatic. Old Mystic is 77.3% cheaper than Cos Cob, a gap that translates to thousands of dollars per year in household expenses. Cos Cob has a cost index of 207 while Old Mystic sits at 117, 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 Cos Cob is $2,574/month compared to $1,823/month in Old Mystic — a 41% difference. Home values follow the same pattern: Old Mystic is more affordable at $324,600 median vs $1,149,500.

Median household income in Cos Cob is $176,602 compared to $119,444 in Old Mystic (+47.9%). The higher salaries in Cos Cob partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Cos Cob spend roughly 17.5% of their income on rent, less than the 18.3% in Old Mystic.