Sunnyvale is 66% more expensive than Orange.
When comparing Sunnyvale, CA and Orange, CA, the overall cost of living indices are 341 and 206 respectively (national median = 100). Rent is $813/month cheaper in Orange, saving renters about $9,756/year.
Median household income is $64,917/year higher in Sunnyvale. Home values also differ significantly — the median in Sunnyvale is $1,816,600 compared to $900,700 in Orange.
Both cities share the same state tax structure since they are in California.
Sunnyvale vs Orange — common questions
Other cost of living comparisons for Sunnyvale and Orange