North Carolina families searching for autism prevalence data often find numbers stated confidently without any indication of where they came from. This article is honest about what's actually known, what the source limitations are, and what the national picture suggests for NC families — because a number without a traceable source isn't useful information.
North Carolina is not a CDC ADDM surveillance site
The CDC's Autism and Developmental Disabilities Monitoring (ADDM) Network is the most rigorous autism surveillance programme in the United States. In 2022, 16 sites across the US conducted surveillance for ASD among children aged 4 and 8 years. Those sites were located in Arizona, Arkansas, California, Georgia, Indiana, Maryland, Minnesota, Missouri, New Jersey, Pennsylvania, Puerto Rico, Tennessee, Texas (two sites), Utah, and Wisconsin. North Carolina is not on that list.
This matters because the 1-in-31 national figure — the one cited in virtually every autism prevalence article in 2025 — comes from this ADDM Network. It is not a number that can be cleanly attributed to North Carolina, because North Carolina's population was not part of how it was generated.
What NC-specific data does exist
The most reliable North Carolina-specific autism data comes from the state's public school system.
North Carolina's Department of Public Instruction publishes annual Child Count data tracking the number of students served under each IDEA disability eligibility category — including Autism — in public schools statewide. This is submitted annually to the US Department of Education as required under federal law. It is real, audited data. But it measures something different from clinical prevalence:
It counts only students enrolled in public schools who have been assigned autism as an eligibility category
It does not include children under school age
It does not include children educated in private schools or homeschooled
It does not capture children whose primary IEP eligibility is another category, even if they carry an ASD diagnosis
For the most current figures, the NC DPI Exceptional Children Division publishes the Child Count report annually — and that primary source should be consulted directly rather than relying on any secondary summary of it.
What the national picture suggests for NC families
While North Carolina-specific prevalence figures with full traceability are limited, the national data from the 2022 ADDM Network provides the most rigorous available benchmark.
About 1 in 31 (3.2%) children aged 8 years have been identified with ASD according to estimates from CDC's ADDM Network. ASD is reported to occur in all racial, ethnic, and socioeconomic groups and is over 3 times more common among boys than among girls.
The median age of earliest known ASD diagnosis nationally was 47 months — just under 4 years old. Only half of children with ASD were identified by that age. This gap between when diagnosis is possible and when it actually happens is clinically significant because ABA therapy and early intervention services can only begin after diagnosis.
At some sites, early diagnoses by age 4 have tripled compared to older cohorts. Nationally, the infrastructure for early identification is improving — and North Carolina families who act on early developmental concerns rather than waiting for school-age screening put their child in a better position to access that window.
A significant recent development: NC Medicaid expansion
In December 2023, North Carolina expanded Medicaid eligibility under the Affordable Care Act — one of the last states to do so. This is one of the most consequential recent policy changes for autism families in North Carolina.
Before expansion, families who earned too much to qualify for traditional Medicaid but not enough to afford private insurance fell into a coverage gap. ABA therapy — which can cost $50,000 or more per year out of pocket — was inaccessible for many of these families. Medicaid expansion closed that gap for a large portion of the population.
NC Medicaid, Health Choice for Children, and NC Medicaid Tailored Plans now cover ABA therapy for children with an autism diagnosis. Private insurance coverage is also mandated under NC General Statute 58-51-57. Blossom's enrollment team verifies insurance within 24 hours and handles all prior authorization paperwork.
Early intervention in North Carolina
The North Carolina Infant-Toddler Programme provides early intervention services for children from birth through age two with developmental delays or conditions likely to cause delay — including autism. Parents can self-refer without a physician referral. Services are provided at no cost to families.
For children aged 3 and older, services transition to the school system through an Individualized Education Programme (IEP). Parents have the right to request an IEP evaluation at any time — and a request in writing starts a federally mandated evaluation timeline.
ABA therapy in North Carolina with Blossom
Blossom ABA provides in-home ABA therapy for autistic children across North Carolina — no waitlist, NC Medicaid, Health Choice, and NC Tailored Plans accepted.
Services are available across the Charlotte Metro (Charlotte, Concord, Gastonia, Huntersville, Mooresville), the Triangle and Triad (Raleigh, Durham, Cary, Chapel Hill, Greensboro, Winston-Salem, High Point), and across western and coastal NC (Asheville, Wilmington, Fayetteville, Greenville, Rocky Mount).
Contact our team to get started.
North Carolina autism resources
Autism data across Blossom's other service states
North Carolina's data situation is different from some of the other states Blossom serves — and that's worth understanding if you're trying to make sense of the numbers you're finding online. Two of Blossom's states have direct CDC ADDM surveillance data; two don't.
Autism Statistics in Georgia → — Georgia has been a CDC surveillance site since 2000. Its Metro Atlanta figures are among the most methodologically reliable in the Southeast.
Autism Statistics in Tennessee → — Tennessee is also an ADDM site, covering Middle Tennessee. Its 2022 rate was 34.0 per 1,000 — one of the higher figures in the national network.
Autism Statistics in Virginia → — Like North Carolina, Virginia is not a CDC ADDM site. Here's what data does and doesn't exist for Virginia families.
Blossom provides in-home ABA therapy across North Carolina, Georgia, Tennessee, and Virginia — NC Medicaid and Health Choice accepted, no waitlist. Contact our team to get started.
Frequently Asked Questions
What is the autism prevalence rate in North Carolina?
North Carolina is not a CDC ADDM Network site, so there is no state-level federally standardized prevalence figure. The national CDC figure of 1 in 31 children aged 8 (32.2 per 1,000) is the best available benchmark. NC DPI Exceptional Children enrollment data tracks public school students classified under the autism eligibility category — real but narrower than clinical prevalence.
Does NC Medicaid cover ABA therapy?
Yes. NC Medicaid, Health Choice for Children, and NC Medicaid Tailored Plans cover ABA therapy for children with an autism diagnosis. North Carolina expanded Medicaid in December 2023, significantly increasing coverage access. Private insurance coverage is mandated under NC General Statute 58-51-57.
What early intervention services are available in North Carolina?
The North Carolina Infant-Toddler Programme provides services at no cost for children from birth through age two with developmental delays. Parents can self-refer. Services transition to school-based programming through the IEP process at age three.
Why does Blossom not state a specific North Carolina autism prevalence rate?
Because no traceable, independently verified state-specific prevalence figure for North Carolina exists from a primary source — only the national ADDM benchmark. Publishing a number without a traceable source isn't useful to families and can actively mislead. When a verified NC-specific figure becomes available from NC DPI or another primary source, this article will be updated.
Sources
Shaw KA, Williams S, Patrick ME, et al. Prevalence and Early Identification of Autism Spectrum Disorder Among Children Aged 4 and 8 Years — Autism and Developmental Disabilities Monitoring Network, 16 Sites, United States, 2022. MMWR Surveill Summ 2025;74(No. SS-2):1–22. https://www.cdc.gov/mmwr/volumes/74/ss/ss7402a1.htm
CDC. Data and Statistics on Autism Spectrum Disorder. https://www.cdc.gov/autism/data-research/index.html
NC DPI Exceptional Children Division. Child Count data. https://www.dpi.nc.gov/students-families/exceptional-children
