Concord is 46% more expensive than Richardson.
When comparing Concord, CA and Richardson, TX, the overall cost of living indices are 187 and 128 respectively (national median = 100). Rent is $401/month cheaper in Richardson, saving renters about $4,812/year.
Median household income is $12,938/year higher in Concord. Home values also differ significantly — the median in Concord is $755,900 compared to $405,600 in Richardson.
Texas has no state income tax, giving Richardson residents a significant tax advantage over California's 13.3% rate.
Concord vs Richardson — common questions
Other cost of living comparisons for Concord and Richardson