Ontario is 90% more expensive than Columbia.
When comparing Ontario, CA and Columbia, MO, the overall cost of living indices are 152 and 80 respectively (national median = 100). Rent is $849/month cheaper in Columbia, saving renters about $10,188/year.
Median household income is $18,318/year higher in Ontario. Home values also differ significantly — the median in Ontario is $568,000 compared to $268,300 in Columbia.
Missouri has a lower income tax rate, making Columbia slightly more tax-friendly.
Ontario vs Columbia — common questions
Other cost of living comparisons for Ontario and Columbia