Washington is 159% more expensive than McAllen.
When comparing Washington, DC and McAllen, TX, the overall cost of living indices are 171 and 66 respectively (national median = 100). Rent is $883/month cheaper in McAllen, saving renters about $10,596/year.
Median household income is $46,122/year higher in Washington. Home values also differ significantly — the median in Washington is $724,600 compared to $173,800 in McAllen.
Texas has no state income tax, giving McAllen residents a significant tax advantage over District of Columbia's 10.75% rate.
Washington vs McAllen — common questions
Other cost of living comparisons for Washington and McAllen