U.S. Census Bureau, American Community Survey
2019 to 2023 5-year estimates, table B09001 (population under 18 by age), for every ZIP Code Tabulation Area. Gives the number of children in each zip by age band.
census.gov/programs-surveys/acsABA Market Finder
Estimated autistic kids vs. BCBAs, RBTs and ABA practices, for any U.S. zip code.
| Zip | Place | Est. kids | BCBAs | RBTs | Orgs | Kids per BCBA |
|---|
Every figure is built from three public U.S. government sources plus BACB's published certificant totals. The data covers all 34,000 U.S. zip codes and was compiled in November 2026.
2019 to 2023 5-year estimates, table B09001 (population under 18 by age), for every ZIP Code Tabulation Area. Gives the number of children in each zip by age band.
census.gov/programs-surveys/acsLatest estimate: 1 in 31 children (3.2%) identified with autism at age 8, based on 2022 surveillance data published April 2025. Applied to the Census child counts to estimate autistic kids per zip. The rate is adjustable because local rates vary.
cdc.gov/autism/data-researchThe full NPI registry file, November 2026. Active NPIs counted at their practice location zip using provider taxonomy codes: 103K00000X Behavior Analyst (BCBA), 106S00000X Behavior Technician (RBT), and Type 2 organization NPIs with any ABA code (ABA organizations).
As of July 1, 2026: 85,587 BCBAs and 260,174 RBTs. NPI listings run higher (about 119,500 behavior analysts and 632,700 technicians), so "BACB-adjusted" counts scale each zip by the national ratio (0.72 for BCBAs, 0.41 for RBTs).
bacb.com/bacb-certificant-data