Portsmouth, NH vs Rochester, NH

The cost of living difference between Portsmouth, NH and Rochester, NH is dramatic. Rochester is 49.3% cheaper than Portsmouth, a gap that translates to thousands of dollars per year in household expenses. Portsmouth has a cost index of 145 while Rochester sits at 97, 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 Portsmouth is $1,778/month compared to $1,220/month in Rochester — a 46% difference. Home values follow the same pattern: Rochester is more affordable at $262,600 median vs $640,600.

Median household income in Portsmouth is $105,756 compared to $79,388 in Rochester (+33.2%). The higher salaries in Portsmouth partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Portsmouth spend roughly 20.2% of their income on rent, more than the 18.4% in Rochester.

Climate-wise, both cities share similar average temperatures (46.9°F vs 47.7°F). Portsmouth receives more rainfall at 47" per year compared to 41.2" in Rochester.