Sources of income vary substantially among the 2.1 million U.S. farm operator households. Most farm households report some off-farm income, both earned and unearned. Off-farm income typically comes from wages, salaries, and self-employment. Some households, however, report income mainly from unearned sources (interest, dividends, and retirement income). How do the levels and sources of household income differ by household and farm characteristics? What are the implications of these differences?