A stratified random sample of 894 persons who purchased a 2001 resident Illinois trapping license was surveyed after the furbearer trapping season. The U.S. Postal Service successfully reached 858 of the licensees, 619 (72%) of whom returned usable questionnaires. Trapping license sales increased 25% from 2000 (2,126 licenses) to 2001 (2,668 licenses). Trappers had traps set for an average of 29.8 days during the 2001-2002 season, and they harvested an estimated 184,562 furbearers (up 91% from the 96,480 harvested in 2000-2001). Data are provided for temporal distribution of trapping activities, types of traps used, participation in trapper education programs, sources of furbearer and trapping information, and fur hunting by trappers. The opinions of trappers as to changes in furbearer populations are also presented, as is a profile of personal characteristics of trappers.