Monmouth Junction, NJ vs South Plainfield, NJ

Monmouth Junction, NJ and South Plainfield, NJ have a very similar cost of living, with only a 2.2% difference in their overall index. Monmouth Junction scores 137 while South Plainfield scores 134 on the cost of living index, where 100 represents the national average. The day-to-day expenses for residents in both cities are comparable, though differences emerge when looking at specific categories.

On the housing front, median rent in Monmouth Junction is $1,880/month compared to $1,928/month in South Plainfield — a 3% difference. Interestingly, home values tell a different story: while Monmouth Junction has cheaper rent, South Plainfield actually has lower median home values ($443,900 vs $497,100).

Median household income in Monmouth Junction is $125,892 compared to $126,063 in South Plainfield (-0.1%). South Plainfield offers a double advantage: higher earnings combined with a lower cost of living, giving residents significantly more purchasing power. Looking at affordability, residents of Monmouth Junction spend roughly 17.9% of their income on rent, less than the 18.4% in South Plainfield.