Quoted from Viggin900:
City not state tax! Duh. Tell me what Chicago is compared to Boone county KY please.
Chicago has no income tax and many pay less than $6K for property tax in the city, I speak from experience. If you are talking about sales tax for Chicago it is 10.25% which is a total of state, county and city sales tax rates. All residents of Illinois, including Chicago residents, are subject to State and Federal income taxes, the Illinois income tax is a flat tax.
I don't know the specifics of anyone's situation, income, residence, etc. but I have lived in Michigan and can say the total cost of living was not night and day.