Arlington is 59% more expensive than Richardson.
When comparing Arlington, VA and Richardson, TX, the overall cost of living indices are 203 and 128 respectively (national median = 100). Rent is $450/month cheaper in Richardson, saving renters about $5,400/year.
Median household income is $43,903/year higher in Arlington. Home values also differ significantly — the median in Arlington is $864,800 compared to $405,600 in Richardson.
Texas has no state income tax, giving Richardson residents a significant tax advantage over Virginia's 5.75% rate.
Arlington vs Richardson — common questions
Other cost of living comparisons for Arlington and Richardson