This paper reports on national estimates for past year child maltreatment from a national household survey conducted in 2011. It also discusses the validity of such estimates in light of other available epidemiology. The Second National Survey of Children Exposed to Violence obtained rates based on 4,503 children and youth from interviews with caregivers about the children ages 0-9 and with the youth themselves for ages 10-17. The past year rates for physical abuse by caregivers were 4.0% for all sample children, emotional abuse by caregivers 5.6%, sexual abuse by caregivers 0.1%, sexual abuse by caregivers and non-caregivers 2.2%, neglect 4.7% and custodial interference 1.2%. Overall, 12.1% of the sample experienced at least one of these forms of maltreatment. Twenty-three percent of the maltreated children or 2.8% of the full sample experienced 2 or more forms of maltreatment. Some authority (teacher, police, medical personnel or counselor) was aware of considerable portions of most maltreatment, which suggests the potential for intervention. Many of the study's estimates were reasonable in light of other child maltreatment epidemiological studies, but comparisons about emotional abuse and neglect were problematic because of ambiguity about definitions.