Washington is 23% more expensive than Westminster.
When comparing Washington, DC and Westminster, CO, the overall cost of living indices are 171 and 139 respectively (national median = 100). Rent is $84/month cheaper in Westminster, saving renters about $1,008/year.
Median household income is $10,142/year higher in Washington. Home values also differ significantly — the median in Washington is $724,600 compared to $497,400 in Westminster.
Colorado has a lower income tax rate, making Westminster slightly more tax-friendly.
Washington vs Westminster — common questions
Other cost of living comparisons for Washington and Westminster