Columbia is 38% cheaper than Richardson.
When comparing Columbia, SC and Richardson, TX, the overall cost of living indices are 80 and 128 respectively (national median = 100). Rent is $667/month cheaper in Columbia, saving renters about $8,004/year.
Median household income is $40,604/year higher in Richardson. Home values also differ significantly — the median in Columbia is $243,500 compared to $405,600 in Richardson.
Texas has no state income tax, giving Richardson residents a significant tax advantage over South Carolina's 6.4% rate.
Columbia vs Richardson — common questions
Other cost of living comparisons for Columbia and Richardson