Zablotsky B, Black LI, Maenner MJ., et al. - Using the National Health Interview Survey, researchers analyzed the national prevalence of 10 developmental disabilities [ie, attention-deficit/hyperactivity disorder; autism spectrum disorder; blindness; cerebral palsy; moderate to profound hearing loss; learning disability; intellectual disability; seizures; stuttering or stammering; and other developmental delays] in US children (aged 3 to 17 years) and examined changes over time by associated demographic and socioeconomic features. Overall, significant increases in the incidence of any developmental disability, attention-deficit/hyperactivity disorder, autism spectrum disorder, and intellectual disability were reported from 2009 to 2011 and 2015 to 2017, but a significant reduction for any other developmental delay. Any developmental disability has risen in prevalence among boys, older children, non-Hispanic white and Hispanic children, children with private insurance only, children with a birth weight ≥ 2500 g, and children living in urban areas and with undereducated mothers. Between 2009 and 2017, the incidence of developmental disability among US children aged 3 to 17 increased. Changes across demographic and socioeconomic subgroups can be attributed to improvements in healthcare knowledge and access.