Median age first autism diagnosis 8-year-olds by subtype U.S. states 2022| ��ƽ��

Median age at first autism diagnosis among U.S. children aged 8 years in surveillance areas in select U.S. states by subtype in 2022* (in months)

Characteristic	All children with an ASD diagnosis*	ASD diagnosis and IQ less than or equal to 70	ASD diagnosis with an IQ greater than 70
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Release date

April 2025

More information

Region

United States

Survey time period

2022

Age group

8 years

Supplementary notes

ASD: autism spectrum disorder
IQ: intelligence quotient

* Surveillance area descriptions:

Arizona: Part of one county in metropolitan Phoenix.

Arkansas: 21 counties in central Arkansas.

California: Part of one county in metropolitan San Diego.

Georgia: Three counties in metropolitan Atlanta.

Indiana: One county in metropolitan Indianapolis.

Maryland: Five counties in the Baltimore area.

Minnesota: Parts of three counties in the Twin Cities metropolitan area.

Missouri: Three counties in metropolitan St. Louis.

New Jersey: Two counties in the New York metropolitan area.

Pennsylvania: One county in suburban Philadelphia.

Tennessee: 11 counties in middle Tennessee.

Texas (Austin): Part of one county in south central Texas. The site name reflects the location of the surveillance team and not the surveillance area.

Texas (Laredo): One county in south Texas.

Utah: Three counties in northern Utah.

Wisconsin: Eight counties in southeastern Wisconsin.

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** Children with unknown IQ are included in the “all children with an ASD diagnosis” category, but not the IQ-specific strata.

Citation formats

Children aged eight years with an autism spectrum disorder diagnosis and an IQ of less than or equal to 70, indicating a co-occurring intellectual disability, had a median initial diagnosis age of **** in the state of Georgia. Autism spectrum disorder is a developmental disability characterized by deficits in social communication and interaction as well as repetitive behavior, interest, or activity patterns. This statistic shows the median age at the first autism diagnosis among U.S. children aged eight years in selected U.S. states by subtype in 2022.