The purpose of this study was to better understand the impact of sex offender registration and notification laws on the family members of registered sex offenders (RSO). An online survey was utilized to collect data from 584 family members across the U.S. Employment problems experienced by the RSO, and subsequent financial hardships, emerged as the most pressing issue identified by family members. The likelihood of housing disruption was correlated with residential restriction laws; larger buffer distances led to increased frequencies of housing crisis. Family members living with an RSO were more likely to experience threats and harassment by neighbors. Children of RSOs reportedly experienced adverse consequences including stigmatization and differential treatment by teachers and classmates. More than half had experienced ridicule, teasing, depression, anxiety, fear, or anger. Unintended consequences can impact family members' ability to support RSOs in their efforts to avoid recidivism and successfully reintegrate. Implications for criminal justice policy and practice are discussed.Keywords Registered sex offender . Family members . Megan's law . Sexual abuse It is estimated that there are currently over 644,000 registered sex offenders (RSO) in the United States (National Center for Missing and Exploited Children 2008), and that number will continue to grow with new sex crime convictions and the release of sex offenders from incarceration. Efforts to protect citizens from recidivistic sex crimes have evolved over the past 15 years. The Jacob Wetterling Act was enacted by the U.S. Congress in 1994 and required convicted sex offenders to register Am J Crim Just (2009) 34:54-68