New Jersey identifies autism in 1 in 29 eight-year-olds (about 3.4%), versus 1 in 31 nationally, and about 1 in 27 four-year-olds born in 2018. NJ has ranked at or near the top of every CDC surveillance cycle since 2000.
New Jersey's numbers right now
The CDC's ADDM Network has included a New Jersey site, led by Rutgers researchers, since surveillance began. In the latest cycle (2022 data, published April 2025):
| Measure | New Jersey | US overall |
|---|---|---|
| 8-year-olds identified with autism | 1 in 29 | 1 in 31 |
| 4-year-olds (born 2018) | about 1 in 27 | 1 in 34 |
| Boys vs girls | about 3 to 4 times more boys | 3.4x |
Put simply: in a typical New Jersey classroom of 29 kids, one has an identified autism spectrum disorder.
Why does New Jersey rank so high?
Researchers do not believe New Jersey children are dramatically more likely to have autism. The state's high numbers mostly reflect how well NJ finds autism:
- Education records in NJ are unusually complete, and ADDM counts rely on records.
- Strong pediatric screening culture and specialist density mean earlier, more frequent evaluation.
- A 2009 state insurance mandate and active advocacy community keep awareness high.
In other words, New Jersey's rate is likely closer to the true prevalence everywhere; other states may simply be undercounting.
What high prevalence means on the ground
1 in 29 translates to thousands of families in every county. In populous counties like Bergen County, Essex County, Middlesex County, and Ocean County, that means sustained pressure on evaluation clinics, early intervention, special education, and ABA capacity, and it is why waitlists at center-based providers are common.
It is also why in-home models matter: therapists go to families instead of families competing for clinic slots.
The early identification picture
New Jersey's 4-year-old data (about 1 in 27) suggests identification keeps improving, since more children are being found before school age. Earlier identification only helps if services start promptly; autism can be reliably diagnosed around age 2, and the research case for starting therapy early is strong. See our early intervention statistics.
Liftoff ABA provides in-home ABA therapy across New Jersey with no waitlist. We verify insurance for free, and most families start within weeks. Apply here or call us to talk it through.
Sources
- Autism New Jersey: Prevalence Rates
- CDC ADDM Community Report on Autism (2022 surveillance year)
- CDC MMWR Surveillance Summary, April 2025
Frequently asked questions
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