Autism in US special education
IDEA autism eligibility category; national totals include outlying areas. Data period: Fall 2012–2024.
Available tables
National counts with a constant age range
National official total includes outlying areas. A missing age-comparable total is not interpolated.
Fields: Fall year · Students ages 6–21
Download CSV · 13 rowsState autism-category counts, fall 2024
This separate state table uses ages 5–17, not the national chart's 6–21. Iowa does not report by disability category.
Fields: State · Students ages 5–17 · Residents ages 5–17 · Per 1,000 residents
Download CSV · 51 rowsTransformations and calculations
The national series comes from the Part B child-count files. Where a total includes kindergarten-age five-year-olds, we subtract that age group to recover ages 6–21. For the state comparison we use ages 5–17 instead, divided by residents of those ages. The two measures have separate tables and labels.
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You may reuse our original chart designs with attribution to Autism Stats and a link to the report. The underlying sources retain their own terms. We do not claim ownership of government statistics or third-party data.
Read the analysis and limitations