From 2000–2005, 59% of rapes were not reported to law enforcement.[34][35] One factor relating to this is the misconception that most rapes are committed by strangers.[36] In reality, according to the Bureau of Justice Statistics, 38% of victims were raped by a friend or acquaintance, 28% by "an intimate" and 7% by another relative, and 26% were committed by a stranger to the victim. About four out of ten sexual assaults take place at the victim's own home.[37]
Drug use, especially alcohol, is frequently involved in rape. In 47% of rapes, both the victim and the perpetrator had been drinking. In 17%, only the perpetrator had been. 7% of the time, only the victim had been drinking. Rapes where neither the victim nor the perpetrator had been drinking were 29% of all rapes.[38]
Contrary to widespread belief, rape outdoors is rare. Over two thirds of all rapes occur in someone's home. 30.9% occur in the perpetrators' homes, 26.6% in the victims' homes and 10.1% in homes shared by the victim and perpetrator. 7.2% occur at parties, 7.2% in vehicles, 3.6% outdoors and 2.2% in bars.[38]
According to a statistical average over the past 5 years, about 60% of all rapes or sexual assaults in the United States are never reported to the authorities. For college students, the figure is 95%, noted in the Fisher, Cullen and Turner study cited above.