Autism Is Now 1 in 9 Colorado Special Education Students
Autism accounted for 1 in 18 Colorado special education students back in 2012. By 2024 that had climbed to 1 in 9, and the current trend points to roughly 1 in 7 by the end of the decade.
We pulled Colorado's published special education child count for every year from 2012 through 2024, then projected it forward. Below you will find the data, our method, and an honest account of what these numbers cannot tell you.
The finding
| School year | Colorado students in the autism category | Share of all special education |
|---|---|---|
| 2012 | 4,881 | 1 in 18 |
| 2018 | 8,485 | 1 in 12 |
| 2024 | 13,654 | 1 in 9 |
| 2030, projected | 20,000 to 21,400 | about 1 in 7 |
Why the comparison matters more than the count
Between 2012 and 2024, autism enrollment in Colorado schools grew by 180 percent.
Colorado's total special education population grew 36 percent over those same twelve years.
Put those two figures side by side and you can see the real story. Special education in Colorado did not simply get bigger across the board. Autism is claiming a steadily larger share of a system that is expanding far more slowly than the need inside it. Every year, a bigger slice of the same staff, the same classrooms and the same budget has to stretch to cover autism.
Denver is already showing what that feels like
Denver Public Schools told CBS Colorado in April 2026 that it has seen an 84 percent increase in students with autism in five years.
DPS opened 14 Multi-Intensive Autism classrooms this school year. Nine more are planned. Each classroom caps at 10 to 12 students.
That is a district reacting in real time to the curve above.
What we are not saying
The projected growth works out to roughly 600 classrooms if you divide it by the 10 to 12 students DPS puts in a Multi-Intensive Autism room.
We are not making that claim, and you should be skeptical of anyone who does.
Most autistic students in Colorado are not in a center based classroom. They are in general education with support written into an IEP, which is what the law intends. The number of students is real. Converting it into a classroom shortage is not.
What the data does support is simpler, and still uncomfortable. More Colorado children need autism support in school every year, and the system absorbing them is not expanding at the same speed.
Method
We used the number of Colorado students ages 3 to 21 served under the Autism disability category, as reported in the IDEA Section 618 Part B Child Count, published annually by the U.S. Department of Education. We cross checked the most recent year against the Colorado Department of Education's own 2024-25 child count file. They match exactly: 13,654 students in the autism category, out of 121,001 Colorado special education students.
For 2030 we ran two projections and published the range between them. The low end is a linear fit on the last five years, which gives about 20,000. The high end is the five year compound growth rate of 7.8 percent, which gives about 21,400. We deliberately did not use the three year rate of 10.7 percent, which would have produced a larger and less defensible number.
Two limits we will state plainly. Data before 2012 was not available in the public federal files, so we did not estimate it. And this is identified autism, meaning students formally coded under the autism category in school records. It is not a count of how many autistic children exist in Colorado. Identification can move for reasons that have nothing to do with underlying prevalence.
That same distinction shows up in the national data, which we charted separately: autism identification went from 1 in 150 children in 2000 to 1 in 31 in 2022.
What this means if you are a parent right now
Waits are not going to get shorter on their own.
If your child is approaching an evaluation, a placement decision, or a move between schools, the practical advice is the same one we give every family. Start earlier than feels necessary, get the evaluation moving, and do not assume the school will cover therapy.
Schools are not required to provide ABA. Here is what Colorado schools actually offer, and what you can ask for in an IEP.
Sources
- IDEA Section 618 Part B Child Count and Educational Environments, U.S. Department of Education
- Colorado Department of Education, Special Education Child Count, 2024-25
- CBS Colorado, "Denver Public Schools adds autism-based classrooms to meet increased demand," April 30, 2026
- CDC ADDM Network, MMWR Surveillance Summary, 2022 surveillance year
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