State rankings

Autism Rates by State

Pennsylvania has the highest Total Autism Prevalence in 2023 (1,313.35 per 100k), followed by Massachusetts (1,024.73 per 100k) and Connecticut (1,011.72 per 100k). Maryland has the lowest (747.81 per 100k).

Health51 states · 9 metricsUpdated Jun 2, 2026Original page
3 sources
51 of 51 states
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Total Autism Prevalence, 2023

Darker means higher. Click a place to highlight it.

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All 51 ranked

Highest first.

Distribution Median and middle halfThe median is the middle value: half of places are above it, half below. The middle half is the range holding the central 50% of places.More in the glossary →

Each dot is one state; the lines mark the median and the middle half.

Median
950.17 per 100k
Middle half 924.42 per 100k – 976.97 per 100k
Average
952.38 per 100k
51 states
Highest
1,313.35 per 100k
Pennsylvania
Lowest
747.81 per 100k
Maryland

Over time · 2021–2023

The top 5 in 2023, against the median.

  • Median of all states
  • Pennsylvania
  • Massachusetts
  • Connecticut
  • New Jersey
  • Utah

Data

Click a column to sort, a row to highlight that place on the charts.

51 states · # = rank by Total Autism Prevalence
#
1Pennsylvania1,313.35 per 100k1,911.55 per 100k726.55 per 100k
2Massachusetts1,024.73 per 100k1,489.96 per 100k577.43 per 100k
3Connecticut1,011.72 per 100k1,470.85 per 100k568.58 per 100k
4New Jersey1,011.08 per 100k1,465.52 per 100k567.23 per 100k
5Utah1,007.05 per 100k1,433.09 per 100k566.58 per 100k
6California1,005.32 per 100k1,448.49 per 100k564.39 per 100k
7New York1,000.3 per 100k1,458.91 per 100k562.7 per 100k
8District of Columbia996.5 per 100k1,467.38 per 100k566.01 per 100k
9Alaska995.85 per 100k1,407.89 per 100k558.75 per 100k
10Minnesota990.09 per 100k1,419.65 per 100k555.65 per 100k
11Colorado989.36 per 100k1,415.35 per 100k554.17 per 100k
12Washington984.26 per 100k1,413 per 100k551.93 per 100k
13Hawaii978.06 per 100k1,420.44 per 100k547.88 per 100k
14Virginia975.89 per 100k1,417.26 per 100k548.82 per 100k
15Texas973.79 per 100k1,399.4 per 100k547.09 per 100k
16Illinois966.71 per 100k1,400.31 per 100k541.58 per 100k
17North Dakota966.57 per 100k1,373.5 per 100k539.68 per 100k
18Rhode Island966.17 per 100k1,403.38 per 100k541.75 per 100k
19Nebraska965.57 per 100k1,385.19 per 100k540.43 per 100k
20New Hampshire961.36 per 100k1,383.03 per 100k536.54 per 100k
21Idaho956.39 per 100k1,367.78 per 100k536.13 per 100k
22Oregon954.17 per 100k1,375.88 per 100k534.36 per 100k
23Vermont954.1 per 100k1,376.92 per 100k531.39 per 100k
24Wisconsin952.73 per 100k1,368.56 per 100k532.63 per 100k
25South Dakota950.67 per 100k1,354.6 per 100k529.03 per 100k
26Nevada950.17 per 100k1,362.34 per 100k532.5 per 100k
27Arizona947.21 per 100k1,363.29 per 100k529.35 per 100k
28Kansas947.13 per 100k1,363.31 per 100k529.74 per 100k
29Iowa940.49 per 100k1,351.51 per 100k524.69 per 100k
30Montana940.31 per 100k1,342.62 per 100k522.61 per 100k
31Georgia938.43 per 100k1,368.88 per 100k528.59 per 100k
32Florida932.19 per 100k1,354.84 per 100k521.17 per 100k
33Wyoming930.86 per 100k1,323.83 per 100k517.77 per 100k
34Indiana928.35 per 100k1,341.23 per 100k518.56 per 100k
35Michigan928.34 per 100k1,342.62 per 100k518.15 per 100k
36Delaware927.01 per 100k1,354.63 per 100k521.01 per 100k
37Ohio924.62 per 100k1,341.04 per 100k516.49 per 100k
38Missouri924.44 per 100k1,340.46 per 100k517 per 100k
39North Carolina924.39 per 100k1,350.05 per 100k519.88 per 100k
40New Mexico919.84 per 100k1,330.87 per 100k513.91 per 100k
41Oklahoma913.94 per 100k1,319.4 per 100k510.03 per 100k
42Maine911.83 per 100k1,322.75 per 100k507.94 per 100k
43Tennessee909.93 per 100k1,323.03 per 100k509.5 per 100k
44Kentucky909.12 per 100k1,317.23 per 100k507.39 per 100k
45Louisiana901.54 per 100k1,318.14 per 100k506.96 per 100k
46South Carolina894.12 per 100k1,309.3 per 100k501.64 per 100k
47Arkansas893.28 per 100k1,295.22 per 100k497.97 per 100k
48Alabama888.1 per 100k1,299.75 per 100k497.59 per 100k
49Mississippi873.39 per 100k1,281 per 100k489.84 per 100k
50West Virginia872.89 per 100k1,260.46 per 100k482.43 per 100k
51Maryland747.81 per 100k1,078.12 per 100k435.85 per 100k

What correlates with Total Autism Prevalence (2023)?

Pearson r against 2,088 other state metrics sharing at least 31 states. Correlation is not causation.

Higher together

Places that have a higher Total Autism Prevalence tend to score higher on these

  1. Lyme Disease Cases Reported 2000-2020Tick Population by State
    r = +0.62 · strong · n = 50
    Plot
  2. # of MeetingsQuakers by State
    r = +0.62 · strong · n = 51
    Plot
  3. Deaths in 1918Spanish Flu Deaths by State
    r = +0.62 · strong · n = 49
    Plot
  4. Craft Beer ProducedBeer Production by State
    r = +0.57 · strong · n = 51
    Plot
  5. Craft Beer Produced (Barrels)State With the Most Breweries
    r = +0.57 · strong · n = 51
    Plot
  6. Rear WindowsTint Laws by State
    r = +0.54 · strong · n = 35
    Plot

Opposite directions

Places that have a higher Total Autism Prevalence tend to score lower on these

  1. Most Unhealthy States Total ScoreMost Unhealthy States in the U.S.
    r = −0.46 · moderate · n = 49
    Plot
  2. Premature Deaths Per 100kHealthiest States
    r = −0.45 · moderate · n = 51
    Plot
  3. Disease Factors & Prevalence ScoreMost Unhealthy States in the U.S.
    r = −0.45 · moderate · n = 49
    Plot
  4. Deaths per 100k PopFatal Car Accidents by State
    r = −0.45 · moderate · n = 51
    Plot
  5. Per Capita Balance of PaymentsFederal Aid by State
    r = −0.45 · moderate · n = 50
    Plot
  6. Per Capita Balance of Payments without COVIDFederal Aid by State
    r = −0.45 · moderate · n = 50
    Plot

Quick answers

Which state has the highest Total Autism Prevalence?
Pennsylvania has the highest Total Autism Prevalence in 2023, at 1,313.35 per 100k, followed by Massachusetts (1,024.73 per 100k) and Connecticut (1,011.72 per 100k).
Which state has the lowest Total Autism Prevalence?
Maryland has the lowest Total Autism Prevalence in 2023, at 747.81 per 100k.
What is the median Total Autism Prevalence across US states?
The median is 950.17 per 100k across the 51 US states with data in 2023.
Where does this autism rates by state data come from?
Rankodex compiles it from World Population Review and the primary sources it cites: Global Burden of Disease Results - IHME; National surveys estimate U.S. autism prevalence at 1 in 40 - The Transmitter; National and State Estimates of Adults with Autism Spectrum Disorder - National Library of Medicine.