San Francisco is 30% more expensive than Orange.
When comparing San Francisco, CA and Orange, CA, the overall cost of living indices are 267 and 206 respectively (national median = 100). Rent is $167/month cheaper in Orange, saving renters about $2,004/year.
Median household income is $24,501/year higher in San Francisco. Home values also differ significantly — the median in San Francisco is $1,380,500 compared to $900,700 in Orange.
Both cities share the same state tax structure since they are in California.
San Francisco vs Orange — common questions
Other cost of living comparisons for San Francisco and Orange