Richardson is 20% cheaper than Richmond.
When comparing Richardson, TX and Richmond, CA, the overall cost of living indices are 128 and 161 respectively (national median = 100). Rent is $70/month cheaper in Richardson, saving renters about $840/year.
Median household income is $6,219/year higher in Richardson. Home values also differ significantly — the median in Richardson is $405,600 compared to $650,100 in Richmond.
Texas has no state income tax, giving Richardson residents a significant tax advantage over California's 13.3% rate.
Richardson vs Richmond — common questions
Other cost of living comparisons for Richardson and Richmond