Diamond Bar, CA vs Fullerton, CA

Fullerton is moderately more affordable than Diamond Bar, with a 5.5% lower cost of living index. Diamond Bar scores 185 compared to 175 for Fullerton, where the US average is 100. This difference means residents of Diamond Bar can expect to pay noticeably more for everyday expenses, housing, and services.

On the housing front, median rent in Diamond Bar is $2,422/month compared to $2,124/month in Fullerton — a 14% difference. Home values follow the same pattern: Fullerton is more affordable at $859,600 median vs $867,000.

Median household income in Diamond Bar is $106,602 compared to $104,219 in Fullerton (+2.3%). Diamond Bar does offer higher incomes, but the salary premium barely offsets the higher cost of living, leaving residents with a tighter budget. Looking at affordability, residents of Diamond Bar spend roughly 27.3% of their income on rent, more than the 24.5% in Fullerton.

Climate-wise, both cities share similar average temperatures (66.1°F vs 66.2°F). Fullerton receives more rainfall at 11.9" per year compared to 10" in Diamond Bar.