Washington is 90% more expensive than Elgin.
When comparing Washington, DC and Elgin, IL, the overall cost of living indices are 171 and 90 respectively (national median = 100). Rent is $640/month cheaper in Elgin, saving renters about $7,680/year.
Median household income is $17,971/year higher in Washington. Home values also differ significantly — the median in Washington is $724,600 compared to $252,400 in Elgin.
Illinois has a lower income tax rate, making Elgin slightly more tax-friendly.
Washington vs Elgin — common questions
Other cost of living comparisons for Washington and Elgin