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Autism in Illinois

You are not alone. Here is what is true about the child population and public systems in Illinois — and where to start with early intervention, school, and coverage.

The short answer for Illinois

  • You are not alone in Illinois: Census counts 2,705,462 children ages 0–17 (Vintage 2023).
  • IDEA Part B (SY 2022–23): 32,888 children ages 3–21 reported under the Autism disability category in special education (OSEP Section 618) — a served count, not a full population census.
  • Under 3: Illinois Early Intervention. School age: written evaluation request to the district; statewide info via Illinois State Board of Education — Special Education.
  • Coverage: Illinois Medicaid. Rights: Equip for Equality.
  • Published access checklist: 100% (stronger published access path). City numbers only appear later with true local sources.

You are not alone in Illinois

Families across Illinois are navigating evaluation, school plans, and services. The figures below are from primary public sources — Census population and IDEA special-education child counts — not invented totals.

  • 2,705,462 children ages 0–17 live in Illinois (U.S. Census Bureau, Vintage 2023 civilian estimates). You share this state with a large generation of families raising kids.
  • In school year 2022–23, Illinois reported 32,888 children ages 3–21 receiving special education under the Autism disability category (U.S. Department of Education, IDEA Section 618). That is a real administrative count of children served under that category — still not every autistic child in the state, but clear proof many families are on a related path.
  • Public systems exist because this is not rare here: Illinois Early Intervention, school special education, Illinois Medicaid, and Equip for Equality.

Key numbers for autism families in Illinois

Children ages 0–17 in Illinois2,705,462Families share this state with a large generation of kidsU.S. Census · Vintage 2023Source [1]
In special education under “Autism” (ages 3–21)32,888Served under IDEA Part B Autism category — not every autistic childIDEA §618 Part B · SY 2022-23Source [2]
Share of special education (Part B)11.1%Of all Part B disabilities ages 3–21 in the same reportIDEA §618 Part B · SY 2022-23Source [2]
How common identification is (national)1 in 31CDC monitoring sites · context only, not a Illinois censusCDC ADDM · 2022Source [3]
In early intervention (birth–2, all reasons)16,383Part C total served — not autism-onlyIDEA §618 Part C · SY 2022–23Source [10]

Of the IDEA Autism total: 2,483 ages 3–5 and 30,405 school age 5–21.Source [2]

Where to start in Illinois

Pick the path that matches your child. Each bullet is one clear action.

  1. If your child is under 3

    Call early intervention

    • WhoIllinois Early Intervention
    • Do thisAsk for a developmental evaluation
    • Good to knowYou usually do not need a private autism diagnosis first
    • Phone800-323-4769
    Start a referralProgram homepage
    Source [5]

  2. If your child is 3 or older

    Ask the school for an evaluation

    • WhoYour local school district
    • Do thisSend a written request for a special education evaluation
    • SaveDate the letter and keep a copy
    • Statewide infoIllinois State Board of Education
    Open special education infoHow IEPs work
    Source [6]

  3. For health coverage

    Check Medicaid

    • WhoIllinois Medicaid
    • Ask aboutChildren’s coverage
    • Also askEPSDT (screening and treatment for kids on Medicaid)
    • Also askAny developmental disability or HCBS waivers
    • RememberThe agency decides eligibility — not this site
    • ExpansionYes in this catalog[9]— re-check before you rely on it
    Open Medicaid site
    Source [7]

  4. If you are stuck or ignored

    Get free disability rights help

    • WhoEquip for Equality
    • WhenSchool or an agency will not act
    • Do thisContact them and put your concerns in writing
    • AlsoKeep copies of emails, letters, and meeting notes
    Contact rights helpIf you disagree with the school
    Source [8]

Programs and rights in Illinois

Extra official links from the depth research pass. Only fields with a published source are shown. (Full research template.)

Early intervention

Special education rights

Medicaid, DD services, and waivers

Private insurance mandate

  • Illinois Insurance Code 215 ILCS 5/356z.14 requires certain policies to cover diagnosis and treatment of autism spectrum disorders for individuals under 21, with statutory benefit parameters (including historical annual dollar limits described in the section). Confirm current statute and whether a plan is state-regulated.[11]
  • Read statute / official source

Other official help lines

What to do next

If your child is under 3

  1. Refer to Illinois Early Intervention using the official intake information on this page (source: ECTA Part C directory).
  2. You can usually refer without waiting for a private autism diagnosis.
  3. Ask about evaluation timelines and the written IFSP process.

If your child is preschool- or school-age

  1. Send a written request for a special education evaluation to your school district (keep a copy and note the date).
  2. Use statewide special education information from Illinois State Board of Education — Special Education for parent rights and procedural safeguards.
  3. Ask whether the team is considering IEP or 504 supports and request Prior Written Notice of decisions.

Health coverage and rights

  1. Start with Illinois Medicaid for public coverage pathways; ask about EPSDT and any DD or HCBS waivers.
  2. If access or rights are blocked, contact Equip for Equality.
  3. Document everything in writing.

At ages 0–4

toddlers and preschoolers
  • Refer to Illinois Early Intervention as soon as you have developmental concerns — do not wait for a private diagnosis.
  • Ask your pediatrician for developmental screening and a parallel EI referral the same week.
  • If your child is approaching age 3, ask EI about the transition to school-based services (Part B).

Changes with the age control at the top of the page.

At ages 5–8

5 to 8 year olds
  • Put a special education evaluation request in writing to the school principal or special education director.
  • Use the state special education page for parent rights materials: https://www.isbe.net/Pages/Special-Education-Programs.aspx
  • Ask whether a 504 plan or IEP is under consideration and request Prior Written Notice of decisions.

Changes with the age control at the top of the page.

At ages 9–12

9 to 12 year olds
  • Review the IEP or 504 annually; ask for data on progress, not only compliance with minutes.
  • If the district delays evaluation or services, use state complaint and mediation options via Illinois State Board of Education guidance and Equip for Equality.
  • Document home and school differences (sleep, shutdowns, learning) in a short written summary for the team.

Changes with the age control at the top of the page.

At ages 13–16

teenagers
  • Confirm transition planning is in the IEP (federally required by age 16; many states start earlier).
  • Ask Illinois Medicaid about adult-serving waivers or long-term supports planning well before age 18.
  • Involve your teenager in meetings; Equip for Equality can help if rights or access are blocked.

Changes with the age control at the top of the page.

Official autism-related contacts in Illinois

Early intervention under 3 (Illinois Early Intervention)

Illinois Early Intervention[5]
Illinois Department of Human Services[4]

Also see: Early intervention guide

School and special education

Start with your local school district (written evaluation request). Statewide:

IEP or 504 · IEP disputes

Medicaid

Ask about EPSDT and any developmental disability or HCBS waivers.

Disability rights help

Cities in Illinois

Metro guides with local intake contacts, district links, and evaluation pathways:

Autism in Aurora →Local entry points for Aurora families: Kane County's Early Intervention office, the city's two K-12 districts, and the statewide PUNS waiver waitlist and ABA funding rules — every fact sourced.8 local resources listedAutism in Champaign →Local entry points for Champaign families: Champaign County's Early Intervention office, the city's school district, a University of Illinois autism resource, and the statewide waiver waitlist and ABA rules — every fact sourced.8 local resources listedAutism in Chicago →Local entry points for Chicago families: Child and Family Connections referral by ZIP code, Chicago Public Schools' evaluation process, Lurie Children's and Rush's diagnostic programs, and Illinois' PUNS waiver waitlist — every fact sourced.21 local resources listedAutism in Elgin →Local entry points for Elgin families: Kane County's Early Intervention office, the districts that split the city's schools, and the statewide waiver waitlist and ABA funding rules — every fact sourced.7 local resources listedAutism in Joliet →Local entry points for Joliet families: Will County's Early Intervention office, the city's elementary and high school districts, and the statewide waiver waitlist and ABA funding rules — every fact sourced.8 local resources listedAutism in Naperville →Local entry points for Naperville families: DuPage County's Early Intervention office, the city's two school districts, and the statewide waiver waitlist and ABA funding rules — every fact sourced.7 local resources listedAutism in Peoria →Local entry points for Peoria families: Peoria County's Early Intervention office, the districts serving the city, a local ABA provider, and the statewide waiver waitlist and ABA rules — every fact sourced.7 local resources listedAutism in Rockford →Local entry points for Rockford families: Winnebago County's Early Intervention office, Rockford Public Schools, a regional autism screening program, and the statewide waiver waitlist and ABA rules — every fact sourced.7 local resources listedAutism in Springfield →Local entry points for Springfield families: Sangamon County's Early Intervention office, the city's school district, a Springfield-based autism clinic, and the statewide waiver waitlist and ABA rules — every fact sourced.6 local resources listedAutism in Waukegan →Local entry points for Waukegan families: Lake County's Early Intervention office, the districts serving the city, and the statewide waiver waitlist and ABA funding rules — every fact sourced.6 local resources listed

Common questions about autism supports in Illinois

References

  1. [1]U.S. Census Bureau. Vintage 2023 civilian population by single year of age (SC-EST2023-AGESEX-CIV), ages 0–17 summed for Illinois. As of 2023-07-01. Open source
  2. [2]U.S. Department of Education (IDEA §618). Part B Child Count and Educational Environments, school year 2022-23. Children ages 3–21 reported under the Autism disability category (early childhood + school-age totals). This is a count of children served under that category — not a full census of all autistic children. Open source
  3. [3]CDC ADDM Network. Surveillance year 2022: overall ASD prevalence among 8-year-olds across 16 ADDM Network monitoring sites (not every US community) was 32.2 per 1,000 (about 1 in 31). National monitoring-site context only — not a statewide headcount for Illinois. Open source
  4. [4]ECTA Center · Part C directory. Part C state systems and coordinators directory (used for Illinois Early Intervention program and referral fields). Confirm current details on the state site. Open source
  5. [5]Illinois Early Intervention. Illinois Department of Human Services. Official early intervention program site for Illinois. Open source
  6. [6]Illinois State Board of Education — Special Education. Statewide special education information for Illinois. Day-to-day IEPs start with the local school district. Open source
  7. [7]Illinois Medicaid. Public Medicaid / health coverage entry point listed for Illinois. Eligibility is decided by the agency. Open source
  8. [8]Equip for Equality. Protection & Advocacy organization linked for Illinois. Open source
  9. [9]Kaiser Family Foundation. Status of State Medicaid Expansion Decisions. Catalog coding for Illinois: expanded. Re-check the live tracker before citing. Open source
  10. [10]U.S. Department of Education (IDEA §618 Part C). Total infants and toddlers birth through age 2 receiving Part C early intervention (all eligibility reasons — not autism-only). OSEP Section 618. Open source
  11. [11]State insurance statute / DOI. Illinois Insurance Code 215 ILCS 5/356z.14 requires certain policies to cover diagnosis and treatment of autism spectrum disorders for individuals under 21, with statutory benefit parameters (including historical annual dollar limits described in the section). Confirm current statute and whether a plan is state-regulated. Open source

Last checked 2026-08-03. If a link has moved, use the agency’s current homepage.

Last checked 2026-08-03. Programmes and numbers change — always confirm with the agency and your clinician.