Richmond is 29% cheaper than Costa Mesa.
When comparing Richmond, CA and Costa Mesa, CA, the overall cost of living indices are 161 and 228 respectively (national median = 100). Rent is $500/month cheaper in Richmond, saving renters about $6,000/year.
Median household income is $20,035/year higher in Costa Mesa. Home values also differ significantly — the median in Richmond is $650,100 compared to $1,054,700 in Costa Mesa.
Both cities share the same state tax structure since they are in California.
Richmond vs Costa Mesa — common questions
Other cost of living comparisons for Richmond and Costa Mesa