The number of States with monitoring programs increased from 21 to 32 over the 1-year period; however, 46 percent of all offenders being monitored were in Michigan and Florida. Monitoring programs employed different types of equipment and focused on different offender types. Nonetheless, all programs sought to insure the safety of the community by confirming that offenders placed under home confinement remained at home during their nonworking hours. Offenders being monitored were primarily male. The average age was about 30 years, but monitored offenders ranged from 10 to 79 years. About one-third of offenders monitored in 1987 were charged with drunk driving or other major traffic violations. In 1988, the proportion charged with major traffic offenses was reduced to about 25 percent with a concurrent increase in other offense categories. Appendixes provide additional information on monitoring equipment and the use of monitors. 7 references and 6 tables