Fremont is 83% more expensive than Ontario.
When comparing Fremont, CA and Ontario, CA, the overall cost of living indices are 278 and 152 respectively (national median = 100). Rent is $989/month cheaper in Ontario, saving renters about $11,868/year.
Median household income is $93,544/year higher in Fremont. Home values also differ significantly — the median in Fremont is $1,289,400 compared to $568,000 in Ontario.
Both cities share the same state tax structure since they are in California.
Fremont vs Ontario — common questions
Other cost of living comparisons for Fremont and Ontario