Autism Rates By State 2020

Autism, or autism spectrum disorder (ASD), is a developmental disability characterized by challenges with social skills, speech, non-verbal communication, and repetitive behaviors. Typically, there is nothing visually that sets people with ASD apart from anyone else; however, people with ASD may learn, interact, behave, and communicate in ways that are different from most people.

The reason that autism is also called autism spectrum disorder is that the disability occurs on a spectrum, with the range and severity of symptoms varying widely. Children or adults with autism might:

  • Avoiding contact and wanting to be alone
  • Having trouble understand other people’s emotions or talking about their own feelings
  • Might be unaware when people talk to them
  • Have trouble expressing their needs using typical words
  • Have trouble adapting when a routine changes
  • Not look at objects when another person points to them
  • Have unusual reactions to the way things smell, taste, feel, look, or sound

Diagnosing autism can be difficult since there is no medical test that can determine the disorder. Autism, however, can sometimes be detected at 18 months or younger and by age two, an experienced professional can usually provide a reliable diagnosis. Early recognition, as well as behavioral, educational, and family therapies may reduce symptoms and support development and learning.

ASD occurs in all racial, ethnic, and socioeconomic groups. ASD is four times more common among boys than among girls. There are several environmental, biological, and genetic factors that make a child more likely to have an ASD, including:

  • Children born to older parents
  • Children with a sibling who has ASD
  • The prescription drugs valproic acid and thalidomide have been linked with a higher risk of ASD if taken during pregnancy
  • ASD tends to occur more often in people who have certain genetic or chromosomal conditions.

According to the CDC’s Autism and Developmental Disabilities Monitoring (ADDM) Network, about 1 in 59 children has been identified with ASD. About 1 in 28 boys in New Jersey have autism.

The estimated state-level prevalence of ever-diagnosed autism varies from about 1.54% in Texas to 4.88% in Florida. Other states with low prevalence below 2% are Colorado, Alaska, Hawaii, Georgia, Tennessee, Nebraska, North Dakota, South Dakota, and Ohio. Other states with high prevalence above 4% are Rhode Island, Maryland, and Washington D.C.

Autism Rates By State 2020

Source:
State 2020 Pop.
Alabama4,908,620
Alaska734,002
Arizona7,378,490
Arkansas3,039,000
California39,937,500
Colorado5,845,530
Connecticut3,563,080
Delaware982,895
District of Columbia720,687
Florida21,993,000
Georgia10,736,100
Hawaii1,412,690
Idaho1,826,160
Illinois12,659,700
Indiana6,745,350
Iowa3,179,850
Kansas2,910,360
Kentucky4,499,690
Louisiana4,645,180
Maine1,345,790
Maryland6,083,120
Massachusetts6,976,600
Michigan10,045,000
Minnesota5,700,670
Mississippi2,989,260
Missouri6,169,270
Montana1,086,760
Nebraska1,952,570
Nevada3,139,660
New Hampshire1,371,250
New Jersey8,936,570
New Mexico2,096,640
New York19,440,500
North Carolina10,611,900
North Dakota761,723
Ohio11,747,700
Oklahoma3,954,820
Oregon4,301,090
Pennsylvania12,820,900
Rhode Island1,056,160
South Carolina5,210,100
South Dakota903,027
Tennessee6,897,580
Texas29,472,300
Utah3,282,120
Vermont628,061
Virginia8,626,210
Washington7,797,100
West Virginia1,778,070
Wisconsin5,851,750
Wyoming567,025