Duncan, SC vs James Island, SC

The cost of living difference between Duncan, SC and James Island, SC is dramatic. Duncan is 32.7% cheaper than James Island, a gap that translates to thousands of dollars per year in household expenses. Duncan has a cost index of 78 while James Island sits at 116, 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 Duncan is $1,045/month compared to $1,443/month in James Island — a 28% difference. Home values follow the same pattern: Duncan is more affordable at $182,500 median vs $454,200.

Median household income in Duncan is $51,596 compared to $100,176 in James Island (-48.5%). While James Island is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Duncan spend roughly 24.3% of their income on rent, more than the 17.3% in James Island.

Climate-wise, James Island is notably warmer with an average of 67.2°F compared to 61.3°F in Duncan. Duncan receives more rainfall at 49.7" per year compared to 44.3" in James Island.