Washington is 66% more expensive than Madison.
When comparing Washington, DC and Madison, WI, the overall cost of living indices are 171 and 103 respectively (national median = 100). Rent is $536/month cheaper in Madison, saving renters about $6,432/year.
Median household income is $29,304/year higher in Washington. Home values also differ significantly — the median in Washington is $724,600 compared to $346,900 in Madison.
Wisconsin has a lower income tax rate, making Madison slightly more tax-friendly.
Washington vs Madison — common questions
Other cost of living comparisons for Washington and Madison