Farm personal income consists of proprietors' net income; the cash wages, pay-in-kind, and other labor income of hired farm workers; and the salaries of officers of corporate farms.
Please visit http://research.stlouisfed.org/fred2/personalincome for documentation on the derivation of personal income.
Source: US. Bureau of Economic Analysis
Release: State Personal Income (Quarterly)
US. Bureau of Economic Analysis, Farm Personal Income in Illinois (DISCONTINUED SERIES) [ILOFPE], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/ILOFPE/, July 3, 2015.