Irvine, CA vs Ontario, CA

The cost of living difference between Irvine, CA and Ontario, CA is dramatic. Ontario is 54.2% cheaper than Irvine, a gap that translates to thousands of dollars per year in household expenses. Irvine has a cost index of 219 while Ontario sits at 142, 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 Irvine is $2,893/month compared to $1,916/month in Ontario — a 51% difference. Home values follow the same pattern: Ontario is more affordable at $568,000 median vs $1,115,400.

Median household income in Irvine is $129,647 compared to $82,806 in Ontario (+56.6%). While Irvine is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Irvine spend roughly 26.8% of their income on rent, less than the 27.8% in Ontario.

Climate-wise, both cities share similar average temperatures (64.9°F vs 66.8°F). Ontario receives more rainfall at 11.6" per year compared to 11.2" in Irvine.