A striking new report from the Centers for Disease Control and Prevention indicates that a growing number of children across the United States are being diagnosed with autism and other developmental disabilities. The research, which paints a comprehensive picture of shifting public health trends among American youth, reveals that the proportion of parents reporting that their child has a developmental disability has climbed significantly over a multi-year period, shifting from 16.7% to 20.5% between 2019 and 2024.
The findings, published recently in the journal Pediatrics, stem from an exhaustive analysis of data collected through the National Health Interview Survey. This ongoing government questionnaire serves as a vital public health instrument, reaching families nationwide to gather reliable data regarding their healthcare experiences, insurance coverage, and overall well-being. By examining responses gathered through this annual survey, federal researchers were able to track evolving patterns in how developmental conditions are identified and reported across diverse demographic groups and geographic regions over a crucial five-year window.
To measure these trends accurately, the survey relies on specific questions directed to parents and guardians. Participants are asked whether they have ever been told by a healthcare professional that their child has a developmental disability, a category that encompasses autism, attention-deficit/hyperactivity disorder, intellectual disability, or any other specific developmental delay. Additionally, parents are asked if a school representative or health professional has ever informed them that their child has a learning disability. For the parameters of this definitive study, children were classified as having "any developmental disability" if their parents indicated that they lived with any of these five distinct conditions.
When breaking down the data among children ages 3 to 17, the researchers discovered that the prevalence rose across nearly all diagnostic categories. Furthermore, the analysis revealed substantial increases for almost every single category, with intellectual disability standing as the sole exception to this broad upward trajectory. The numbers reflect a profound shift in the diagnostic landscape for American families, impacting households across varying socioeconomic lines and community settings.
Among the individual conditions examined, autism experienced the most dramatic surge. Diagnoses of autism alone jumped by more than 42% over the course of the study. Notably, this massive growth was not distributed evenly across the general population; researchers observed sizable increases specifically among children ages 3 to 5, girls, children living outside of metropolitan areas, and kids from low-income families. This pattern of growth in historically underrepresented or later-diagnosed groups points to changing dynamics in how medical and educational systems identify neurodivergent traits in young children.
At the same time, other common childhood developmental and behavioral conditions also saw considerable upward movement. The number of parents reporting that their child had been diagnosed with attention-deficit/hyperactivity disorder, commonly known as ADHD, climbed by 26%. Meanwhile, learning disabilities and other unspecified developmental delays each grew by approximately 16%. The only category that remained relatively stable during the study period was intellectual disability, which showed a more modest increase of up to more than 6%.
When aggregating these conditions into an overall metric, the researchers determined that the percentage of children diagnosed with developmental disabilities increased significantly throughout the years studied. This upward momentum culminated in a milestone finding: an estimated 1 in 5 children ages 3 to 17 were reported as having a developmental disability diagnosis when the 2023-2024 survey was conducted.
Benjamin Zablotsky, a statistician at the CDC’s National Center for Health Statistics who led the research team, highlighted the unique nature of these findings. He noted that the notable uptick observed among specific groups of children—particularly the sharp increases recorded among very young children—had not been documented in previous federal reports. According to Zablotsky, these shifting figures offer important clues about changes in public health reporting and clinical identification practices.
"We believe these new increases could be related to earlier detection and awareness," Zablotsky explained, pointing to the possibility that modern screening tools and public health initiatives are successfully capturing cases that may have previously gone unnoticed or unrecorded.
Public health experts and academic researchers outside of the federal agency have echoed this interpretation, framing the rising numbers as an indicator of progress rather than a cause for alarm. Scott Landes, a sociology professor at Syracuse University who was not involved in the drafting of the study, emphasized that the reported rise in prevalence should be viewed as a positive development for American families and the healthcare system at large.
"Research suggests that better screening, greater awareness and reduced stigma explain at least part of the increase, which means that more children are being identified and connected to services they previously would have missed," Landes said. He added that a higher reported prevalence rate by parents is best understood, at least in part, as tangible progress in finding and serving disabled children who were always part of the community but were not receiving the needed services and educational supports to help them thrive.
