Santa Ana is 50% more expensive than San Bernardino.
When comparing Santa Ana, CA and San Bernardino, CA, the overall cost of living indices are 163 and 109 respectively (national median = 100). Rent is $542/month cheaper in San Bernardino, saving renters about $6,504/year.
Median household income is $24,366/year higher in Santa Ana. Home values also differ significantly — the median in Santa Ana is $657,800 compared to $384,900 in San Bernardino.
Both cities share the same state tax structure since they are in California.
Santa Ana vs San Bernardino — common questions
Other cost of living comparisons for Santa Ana and San Bernardino