Clayton, MO vs Sullivan, MO

The cost of living difference between Clayton, MO and Sullivan, MO is dramatic. Sullivan is 106.8% cheaper than Clayton, a gap that translates to thousands of dollars per year in household expenses. Clayton has a cost index of 149 while Sullivan sits at 72, 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 Clayton is $1,648/month compared to $862/month in Sullivan — a 91% difference. Home values follow the same pattern: Sullivan is more affordable at $153,100 median vs $799,200.

Median household income in Clayton is $128,898 compared to $60,137 in Sullivan (+114.3%). While Clayton is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Clayton spend roughly 15.3% of their income on rent, less than the 17.2% in Sullivan.