This file provides all the data that was used to estimate the physical input outputs for the State of Illinois. The attached paper describes how the data was collected and provides all the metadata. This dataset is associated with the following publication: Singh, S., J. Compton, T. Hawkins, D. Sobota, and E. Cooter. A Nitrogen Physical Input-Output Table (PIOT) Model for Illinois. ECOLOGICAL MODELLING. Elsevier Science BV, Amsterdam, NETHERLANDS, 360: 194-203, (2017).