Washington is 159% more expensive than Mobile.
When comparing Washington, DC and Mobile, AL, the overall cost of living indices are 171 and 66 respectively (national median = 100). Rent is $871/month cheaper in Mobile, saving renters about $10,452/year.
Median household income is $55,197/year higher in Washington. Home values also differ significantly — the median in Washington is $724,600 compared to $170,300 in Mobile.
Alabama has a lower income tax rate, making Mobile slightly more tax-friendly.
Washington vs Mobile — common questions
Other cost of living comparisons for Washington and Mobile