Autism Recognition Expands to 1 in 31 U.S. Children, CDC Reports, with Ongoing Access Gaps

The recognition of autism among U.S. children continues to grow, with 1 in 31 8-year-olds identified as autistic in 2022, according to new data from the Centers for Disease Control and Prevention (CDC). This marks an increase from 1 in 36 children in 2020, based on surveillance from the CDC's Autism and Developmental Disabilities Monitoring (ADDM) Network. The findings, published in the April 17, 2025, issue of the Morbidity and Mortality Weekly Report, highlight both progress in identifying autism across diverse populations and persistent systemic barriers to equitable support.

Key Findings

The CDC report analyzed data from 16 communities across the U.S., representing about 8% of the nation's 8-year-old population. While the overall recognition rate rose to 3.2%, significant variations emerged by race, ethnicity, and geography:

Key Findings The CDC report analyzed data from 16 communities across the U.S., representing about 8% of the nation's 8-year-old population.

• Racial and ethnic patterns: Autism was recognized more frequently among Asian (4.1%), Black (3.7%), and Hispanic (3.4%) children compared to White children (3.0%). This shift from earlier years—when White children were more likely to be identified—may reflect reduced disparities in screening access, though delays in early evaluations persist for marginalized groups. For example, Black and Hispanic children were 30% less likely than White peers to receive developmental evaluations by age 3, as noted in the ADDM Network's methodology.
• Geographic variability: Recognition rates ranged from 1 in 19 children in San Diego to 1 in 103 in parts of Texas. These gaps likely reflect regional differences in healthcare infrastructure, diagnostic practices, and community awareness, as discussed in Johns Hopkins' analysis.
• Sex differences: Boys were 3.8 times more likely to be recognized as autistic than girls, a ratio that has narrowed slightly from historical estimates. Research suggests this gap reflects diagnostic bias, as girls and gender-diverse individuals often present differently and are under-identified.

Why the Change?

Experts emphasize that rising recognition stems from multiple factors:

• Evolving diagnostic criteria: The DSM-5's 2013 consolidation of autism subtypes (e.g., Asperger's syndrome) into a single spectrum, alongside growing clinician awareness of diverse presentations, has expanded identification. However, as WBUR reports, debates continue about whether these criteria fully explain the magnitude of change.
• Reduced disparities: Targeted outreach in historically underserved communities has improved screening access, though systemic barriers persist. For instance, the Autism Society notes that multilingual resources and culturally responsive evaluations remain unevenly available.
• Methodological shifts: The ADDM Network expanded its case-finding methods between 2020 and 2022, including deeper record reviews, which may contribute to the increase. The CDC cautions that year-to-year comparisons should account for these changes, as detailed in their MMWR report.

What This Means for Families

• Early evaluations matter: Children who receive developmental screenings by age 3 are more likely to access tailored supports—such as speech therapy or sensory accommodations—that can improve quality of life. Delays disproportionately affect marginalized groups, as CNN highlights.
• Navigating disparities: Parents encountering barriers can seek free screenings through Early Intervention programs or community clinics. Autistic-led organizations like the Autism Self Advocacy Network also provide guidance on rights and resources.
• Neurodiversity-affirming care: The data underscores that autism is a natural variation in human neurology. As the Autism Science Foundation notes, supports should focus on removing societal barriers rather than 'fixing' autistic individuals.

Looking Ahead

While the CDC's data reflects growing awareness, it also reveals systemic gaps. 'These numbers show where communities are succeeding in recognizing autism's diversity,' said a CDC official, 'but also where families face preventable delays.' For more details, explore the ADDM Network's full findings.