Mendham, NJ vs Williamstown, NJ

The cost of living difference between Mendham, NJ and Williamstown, NJ is dramatic. Williamstown is 111.2% cheaper than Mendham, a gap that translates to thousands of dollars per year in household expenses. Mendham has a cost index of 201 while Williamstown sits at 95, 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 Mendham is $3,250/month compared to $1,262/month in Williamstown — a 158% difference. Home values follow the same pattern: Williamstown is more affordable at $255,000 median vs $764,000.

Median household income in Mendham is $223,750 compared to $87,021 in Williamstown (+157.1%). While Mendham is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Mendham spend roughly 17.4% of their income on rent, less than the 17.4% in Williamstown.