2021 Community Report on Autism
Autism and Developmental Disabilities Monitoring (ADDM) Network
A Snapshot of Autism Spectrum Disorder among 8-year-old and 4-year-old Children in Multiple Communities across the United States in 2018
Funded by the Centers for Disease Control and Prevention (CDC), United States Department of Health and Human Services

- Executive Summary | Print Version pdf icon[PDF – 203 KB]
- Key Findings from the ADDM Network: A Snapshot of Autism Spectrum Disorder | Print Version pdf icon[PDF – 2 MB]
- A Deeper Dive: Frequently Asked Questions about the ADDM Network Data | Print Version pdf icon[PDF – 2 MB]
- Spotlight On Progress in Evaluation and Diagnosis of Autism Spectrum Disorder | Print Version pdf icon[PDF – 485 KB]
- Spotlight On Closing the Racial and Ethnic Gaps in the Identification of Autism Spectrum Disorder | Print Version pdf icon[PDF – 378 KB]
- Data for Action: How Can You Use the ADDM Network Findings? | Print Version pdf icon[PDF – 2 MB]
- ADDM Network Site Snapshots | Print Version pdf icon[PDF – 416 KB]
- Arizona | Print Version pdf icon[PDF – 408 KB]
- Arkansas | Print Version pdf icon[PDF – 432 KB]
- California | Print Version pdf icon[PDF – 221 KB]
- Georgia | Print Version pdf icon[PDF – 543 KB]
- Maryland | Print Version pdf icon[PDF – 343 KB]
- Minnesota | Print Version pdf icon[PDF – 323 KB]
- Missouri | Print Version pdf icon[PDF – 351 KB]
- New Jersey | Print Version pdf icon[PDF – 354 KB]
- Tennessee | Print Version pdf icon[PDF – 341 KB]
- Utah | Print Version pdf icon[PDF – 314 KB]
- Wisconsin | Print Version pdf icon[PDF – 307 KB]
- Glossary | Print Version pdf icon[PDF – 36 KB]
- References | Print Version pdf icon[PDF – 32 KB]
This community report summarizes the main findings from the following published reports:
Maenner MJ, Shaw KA, Bakian AV, et al. Prevalence and Characteristics of Autism Spectrum Disorder Among Children Aged 8 Years — Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2018. MMWR Surveill Summ 2021, 70 (No. SS-11): 1-16.
Shaw KA, Maenner MJ, Bakian AV, et al. Early Identification of Autism Spectrum Disorder Among Children Aged 4 Years — Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2018. MMWR Surveill Summ 2021, 70 (No. SS-10): 1-14.
To read the full scientific reports, please go to www.cdc.gov/mmwr
To read more about autism spectrum disorder, please visit CDC’s Autism Homepage at www.cdc.gov/autism
The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.