Key Dyslexia Statistics and Facts

Dyslexia affects roughly 1 in 5 people in the United States. It is the most common learning disability, accounting for the majority of all learning disability diagnoses in schools. For families navigating autism, dyslexia matters because the two conditions frequently co-occur, and children with both diagnoses benefit from coordinated support rather than siloed interventions.

This article covers the core dyslexia statistics, what the research says about the overlap between dyslexia and autism, and what families can do when a child has more than one diagnosis.

How Common Is Dyslexia?

• Dyslexia affects an estimated 5% to 17% of the U.S. population, depending on the definition and diagnostic threshold used (International Dyslexia Association).
• Approximately 80% of people identified with learning disabilities have dyslexia, making it the most common learning disability.
• The National Center for Learning Disabilities reports that 1 in 5 students has a language-based learning disability such as dyslexia.
• Dyslexia occurs across all languages and writing systems, though it may present differently depending on how orthographically complex the language is.
• Dyslexia is found across all racial, ethnic, and socioeconomic groups. It does not discriminate by intelligence or background.

Dyslexia Demographics: Who Does It Affect?

• Dyslexia affects males and females at roughly equal rates, though boys are referred for evaluation more often. Research published in the Journal of the American Medical Association attributes this to referral bias rather than true differences in prevalence.
• Dyslexia has a strong genetic component. A child with a dyslexic parent has a 40% to 60% chance of also having dyslexia, according to the Yale Center for Dyslexia and Creativity.
• Studies estimate that approximately one-third of children with a parent who has dyslexia will develop the condition regardless of environmental factors, per research in Annals of Dyslexia.

Dyslexia and Education: The Numbers

• Students with dyslexia who receive early, structured literacy intervention (such as Orton-Gillingham or Wilson Reading) can make significant gains in reading ability, even when intervention begins in the early elementary years.
• Without appropriate support, students with dyslexia are at higher risk for academic underachievement, school avoidance, and lower self-esteem throughout their schooling years.
• Many children with dyslexia are not identified until later in their education. Some studies suggest that fewer than half of children with dyslexia are identified before high school, meaning years of potential intervention are lost.
• The National Assessment of Educational Progress (NAEP) shows that only 35% of U.S. fourth graders read at or above a proficient level, a figure that disproportionately reflects the impact of unidentified learning disabilities including dyslexia.

Dyslexia and Co-Occurring Conditions: The Autism Connection

Dyslexia rarely exists in isolation. Research consistently shows that it co-occurs with other neurodevelopmental conditions at high rates. This is especially relevant for families in the autism community.

• Research suggests that approximately 20% to 40% of people with dyslexia also have ADHD, according to studies published in the Journal of Learning Disabilities.
• Dyslexia and autism can and do co-occur. While they are distinct conditions with different underlying mechanisms, children diagnosed with autism are at elevated risk for reading difficulties including dyslexia. A 2021 review in Developmental Medicine and Child Neurology found that reading challenges are common in autism across all language and ability levels.
• The overlap requires careful, coordinated evaluation. A child who receives only an autism diagnosis may have unidentified reading difficulties being masked by the broader developmental profile. Conversely, a child diagnosed with dyslexia may have autism-related social communication differences that are going unaddressed.
• Anxiety and depression are more common among individuals with dyslexia than the general population, often related to persistent academic struggles and social difficulties at school. For children who also have autism, these mental health risks compound.

What Does ABA Therapy Have to Do With Learning Disabilities?

This is a fair question. ABA therapy is primarily associated with autism, not reading instruction. But for children who have both autism and a learning disability like dyslexia, the picture is more interconnected than it first appears.

ABA therapy builds foundational skills that make structured literacy instruction more effective:

• Sustained attention: A child who cannot sit for 10 minutes or shift attention on demand will struggle with any academic instruction, regardless of the teaching method.
• Following multi-step directions: Literacy instruction often requires following sequences of prompts. ABA directly targets this skill.
• Verbal behavior and phonological awareness: Some ABA programs incorporate verbal behavior targets that overlap meaningfully with the phonological processing skills central to reading development.
• Tolerance for error and frustration: Children with autism who also have dyslexia may shut down at the first sign of academic difficulty. ABA programs can directly target frustration tolerance and task persistence.

Research in JABA (Journal of Applied Behavior Analysis) documents behavior-analytic approaches to reading intervention in children with autism and developmental disabilities, showing meaningful gains in phonics, decoding, and reading fluency when ABA methods are applied to literacy targets.

Famous People With Dyslexia

Many successful entrepreneurs and leaders have dyslexia. Their success is not despite their dyslexia but alongside it, often with significant early support and accommodation:

• Richard Branson (Virgin Group founder) struggled significantly in school and was described as “lazy” by his teachers before dyslexia was understood.
• Steven Spielberg was not diagnosed with dyslexia until his 60s.
• Charles Schwab built one of the largest financial services companies in the U.S. while managing dyslexia.
• Whoopi Goldberg has spoken about how unidentified dyslexia affected her early education.

People with dyslexia often demonstrate strengths in creative thinking, problem-solving, spatial reasoning, and big-picture thinking. With appropriate accommodations and support, people with dyslexia succeed in every field.

Dyslexia in the Workplace

• Adults with dyslexia are underemployed relative to their intellectual ability at disproportionate rates, largely due to early educational disadvantage.
• Workplace accommodations for dyslexia, including text-to-speech software, extended time on written tasks, and alternative formats for written communication, are covered under the Americans with Disabilities Act (ADA).
• Entrepreneurs with dyslexia are over-represented relative to the general population, which some researchers attribute to the problem-solving and creative thinking styles that often accompany dyslexia.

Early Identification and What Families Can Do

Early identification is as critical for dyslexia as it is for autism. Signs of dyslexia can appear as early as preschool, including difficulty with rhyming, learning letter names and sounds, and recognizing familiar words.

If your child shows signs of dyslexia alongside autism or other developmental differences, a comprehensive evaluation can help. For children with autism who may also have learning differences, addressing both conditions simultaneously produces better outcomes than addressing them sequentially.

At Treetop ABA Therapy, we work with families whose children have multiple diagnoses. Our individualized approach addresses each child’s unique combination of needs. We serve families across multiple states and accept most insurance plans. If you have questions about how ABA therapy fits into a broader support plan for your child, reach out to our team.

Frequently Asked Questions

How common is dyslexia?

Dyslexia affects approximately 5% to 17% of the population, according to the International Dyslexia Association. It is the most common learning disability, accounting for roughly 80% of all learning disability diagnoses.

Can a child have both dyslexia and autism?

Yes. While dyslexia and autism are distinct conditions with different underlying characteristics, they can co-occur. Children with both conditions benefit from coordinated support that addresses each diagnosis. A comprehensive evaluation by a multidisciplinary team is the best way to understand a child’s full profile.

Is dyslexia genetic?

Dyslexia has a strong genetic component. According to the Yale Center for Dyslexia and Creativity, a child with a dyslexic parent has a 40% to 60% chance of also having dyslexia.

How is dyslexia diagnosed?

Dyslexia is typically diagnosed through a comprehensive evaluation that includes assessments of reading ability, phonological processing, language skills, and cognitive functioning. Evaluations are conducted by educational psychologists, neuropsychologists, or learning disability specialists.

What support is available for children with dyslexia and autism?

Children with both conditions benefit from a coordinated approach that may include structured literacy instruction (Orton-Gillingham, Wilson, or similar programs) for dyslexia, and ABA therapy for autism-related goals. Contact Treetop ABA Therapy to discuss how we can support your child’s full developmental picture.

Does ABA therapy help with reading or dyslexia?

ABA therapy is not a reading program, but it builds foundational skills like sustained attention, task persistence, and following directions that make reading instruction more effective. For children with autism who also have learning disabilities, ABA and specialized literacy instruction work best in combination, not in isolation.

What are the early signs of dyslexia in young children?

Early signs include difficulty with rhyming, slow acquisition of letter names and sounds, trouble blending sounds into words, and persistent difficulty recognizing familiar words by sight. If you see these signs alongside autism traits, discuss both concerns with your child’s evaluation team.