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Autism in California

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

The short answer for California

  • You are not alone in California: Census counts 8,445,535 children ages 0–17 (Vintage 2023).
  • IDEA Part B (SY 2022–23): 149,127 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: Early Start. School age: written evaluation request to the district; statewide info via California Department of Education — Special Education.
  • Coverage: Medi-Cal. Rights: Disability Rights California.
  • Published access checklist: 100% (stronger published access path). City numbers only appear later with true local sources.

You are not alone in California

Families across California 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.

  • 8,445,535 children ages 0–17 live in California (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, California reported 149,127 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: Early Start, school special education, Medi-Cal, and Disability Rights California.

Key numbers for autism families in California

Children ages 0–17 in California8,445,535Families share this state with a large generation of kidsU.S. Census · Vintage 2023Source [1]
In special education under “Autism” (ages 3–21)149,127Served under IDEA Part B Autism category — not every autistic childIDEA §618 Part B · SY 2022-23Source [2]
Share of special education (Part B)18.5%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 California censusCDC ADDM · 2022Source [3]
In early intervention (birth–2, all reasons)55,730Part C total served — not autism-onlyIDEA §618 Part C · SY 2022–23Source [10]

Of the IDEA Autism total: 18,128 ages 3–5 and 130,999 school age 5–21.Source [2]

Where to start in California

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

  1. If your child is under 3

    Call early intervention

    • WhoEarly Start
    • Do thisAsk for a developmental evaluation
    • Good to knowYou usually do not need a private autism diagnosis first
    • Phone800-515-2229
    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 infoCalifornia Department of Education
    Open special education infoHow IEPs work
    Source [6]

  3. For health coverage

    Check Medicaid

    • WhoMedi-Cal
    • 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

    • WhoDisability Rights California
    • 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 California

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

  • California requires many state-regulated health plans and insurers to cover behavioral health treatment for pervasive developmental disorder or autism (see Health & Safety Code § 1374.73 and Insurance Code § 10144.51, stemming from SB 946). Confirm current statutory text and whether a plan is state-regulated (ERISA self-funded plans may differ).[11]
  • Read statute / official source

Other official help lines

What to do next

If your child is under 3

  1. Refer to Early Start 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 California Department 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 Medi-Cal for public coverage pathways; ask about EPSDT and any DD or HCBS waivers.
  2. If access or rights are blocked, contact Disability Rights California.
  3. Document everything in writing.

At ages 0–4

toddlers and preschoolers
  • Refer to Early Start 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.cde.ca.gov/sp/se/
  • 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 California Department of Education guidance and Disability Rights California.
  • 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 Medi-Cal about adult-serving waivers or long-term supports planning well before age 18.
  • Involve your teenager in meetings; Disability Rights California can help if rights or access are blocked.

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

Official autism-related contacts in California

Early intervention under 3 (Early Start)

Early Start[5]
California Department of Developmental 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 California

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

Autism in Anaheim →Local entry points for Anaheim families: California's Early Start line, the Regional Center of Orange County, and the elementary districts that split Child Find duties across the city — every fact sourced.15 local resources listedAutism in Bakersfield →Local entry points for Bakersfield families: California's Early Start line, Kern Regional Center, and the two districts that split elementary and high school Child Find duties in the city — every fact sourced.16 local resources listedAutism in Fresno →Local entry points for Fresno families: California's Early Start line, Central Valley Regional Center, and the district Child Find offices that cover the city — every fact sourced.15 local resources listedAutism in Long Beach →Local entry points for Long Beach families: California's Early Start line, Harbor Regional Center, Long Beach Unified's Child Find process, and where ABA funding actually comes from — every fact sourced.17 local resources listedAutism in Los Angeles →Local entry points for Los Angeles families: California's Early Start referral line, the seven regional centers that divide the county by health district instead of city line, LAUSD's Child Find office, hospital evaluation programs, and the state's ABA funding routes — every fact sourced.16 local resources listedAutism in Oakland →Local entry points for Oakland families: California's Early Start line, the Regional Center of the East Bay, Oakland Unified's special education process, and where funding for evaluation and therapy actually comes from — every fact sourced.9 local resources listedAutism in Sacramento →Local entry points for Sacramento families: California's Early Start line, Alta California Regional Center, the district Child Find offices covering the city, and a parent-run family resource center — every fact sourced.16 local resources listedAutism in San Diego →Local entry points for San Diego families: California's Early Start referral line, San Diego Regional Center, school district Child Find offices, and where ABA funding actually comes from — every fact sourced.14 local resources listedAutism in San Francisco →Local entry points for San Francisco families: California's Early Start line, Golden Gate Regional Center, SFUSD's Child Find process, and the state funding routes for ABA — every fact sourced.11 local resources listedAutism in San Jose →Local entry points for San Jose families: California's Early Start line, San Andreas Regional Center, and the district and county-office Child Find contacts that cover the city — every fact sourced.13 local resources listed

Common questions about autism supports in California

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 California. 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 California. Open source
  4. [4]ECTA Center · Part C directory. Part C state systems and coordinators directory (used for Early Start program and referral fields). Confirm current details on the state site. Open source
  5. [5]Early Start. California Department of Developmental Services. Official early intervention program site for California. Open source
  6. [6]California Department of Education — Special Education. Statewide special education information for California. Day-to-day IEPs start with the local school district. Open source
  7. [7]Medi-Cal. Public Medicaid / health coverage entry point listed for California. Eligibility is decided by the agency. Open source
  8. [8]Disability Rights California. Protection & Advocacy organization linked for California. Open source
  9. [9]Kaiser Family Foundation. Status of State Medicaid Expansion Decisions. Catalog coding for California: 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. California requires many state-regulated health plans and insurers to cover behavioral health treatment for pervasive developmental disorder or autism (see Health & Safety Code § 1374.73 and Insurance Code § 10144.51, stemming from SB 946). Confirm current statutory text and whether a plan is state-regulated (ERISA self-funded plans may differ). 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.