Changes since 1970 in the distribution of selected farm characteristics among constant and current dollar farm sales categories were examined. In general, the same trends emerged but changes were less dramatic after adjusting for inflation. The increasing concentration of net farm income among farms with sales exceeding $500,000 was attributed in part to their continuing high ratio of gross farm income to expenses (approximately 145 percent). Farms with sales between $10,000 and $500,000 became more dependent on nonfarm income. This dependency is postulated to result from a farm income treadmill and use of nonfarm income to cope with the treadmill.