Arlington is 26% cheaper than Richardson.
When comparing Arlington, TX and Richardson, TX, the overall cost of living indices are 95 and 128 respectively (national median = 100). Rent is $436/month cheaper in Arlington, saving renters about $5,232/year.
Median household income is $22,738/year higher in Richardson. Home values also differ significantly — the median in Arlington is $276,400 compared to $405,600 in Richardson.
Both cities share the same state tax structure since they are in Texas.
Arlington vs Richardson — common questions
Other cost of living comparisons for Arlington and Richardson