Washington is 36% more expensive than Surprise.
When comparing Washington, DC and Surprise, AZ, the overall cost of living indices are 171 and 126 respectively (national median = 100). Rent is comparable in both cities, with less than $50/month separating them.
Median household income is $12,916/year higher in Washington. Home values also differ significantly — the median in Washington is $724,600 compared to $396,000 in Surprise.
Arizona has a lower income tax rate, making Surprise slightly more tax-friendly.
Washington vs Surprise — common questions
Other cost of living comparisons for Washington and Surprise