Place Information
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Piatt County is a county located in the U.S. state of Illinois. As of 2000, the population is 16,365. Its county seat is Monticello, Illinois. Piatt County is part of the Champaign–Urbana Metropolitan Statistical Area.
History
Piatt County was formed in 1841 from Macon and Dewitt Counties. It was named after James A. Piatt, a local resident instrumental in formation of the county. Illinois Power Company was a major electric utility in Central Illinois, centered in Decatur, Illinois, to the west of Piatt County. At one time, Illinois had a "personal property tax", an ad valorem tax levied by the counties on property that was not real estate. The personal property tax was a major expense for the electric utilities, since their generators and transmission lines were "personal property". Under Illinois law, a corporation, such as Illinois Power, paid personal property tax to the county in which the corporate headquarters was located. Because Piatt County offered a low tax rate, Illinois Power moved its corporate headquarters to that county. This allowed Piatt County to tax utility assets over half of the State, providing a rich source of revenue which was responsible for much of the wealth of this tiny county. Timeline
Population History
Research TipsExternal links
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