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Dyscalculia statistics 2026: how common is dyscalculia?

About 3 to 6 in every 100 school-age children have dyscalculia, depending on the criteria used; in a class of 30 that is one or two pupils. Every figure below shows its own year and a source you can check, and no country we looked at publishes an official count of dyscalculia alone.

Updated · Next review
  • 28 sources
  • Source year: 1994–2026

Short answer

What percentage of children have dyscalculia?

Population studies put the prevalence of dyscalculia at about 3–6% of school-age children, a rate similar to dyslexia and ADHD; the German clinical guideline gives 3–7%. Individual studies found 6.5% in Israel (3,029 children), 5.7% in a UK primary school sample (2,421 children) and 6.0% arithmetic impairment in Brazil (1,618 children). Unlike dyslexia, dyscalculia affects boys and girls in roughly equal numbers in most studies. No country we checked counts dyscalculia officially: the US and England count broader learning-disability categories that also include reading and writing.

  • Prevalence: about 3–6% of school-age children (review of population studies, 2000); 3–7% in the German guideline (2019).
  • It lasts: 95% of children with dyscalculia were still in the lowest quarter of their class in arithmetic six years later.
  • Boys and girls: similar rates in Israel and the UK; more girls in two German samples.
  • People with dyscalculia have markedly higher odds of also having dyslexia (odds ratio 12.25, 2019 guideline meta-analysis).
  • Targeted maths interventions have an average effect of about 0.52; they improve skills, they do not make dyscalculia go away.
  • Last updated 2026-10-06; next review planned for 2027-04-06.

  • 3–6%

    of school-age children have dyscalculia (review of population studies)1

    Source year: 2000

  • 6.5%

    of 3,029 children in an Israeli population study2

    Source year: 1996

  • 5.7%

    of 2,421 UK primary school children had a dyscalculia profile3

    Source year: 2018

  • 95%

    were still in the lowest quarter for arithmetic six years later4

    Source year: 2005

  • OR 12.25

    higher odds of also having dyslexia5

    Source year: 2019

  • 0.52

    average effect size of targeted maths interventions5

    Source year: 2019

How common is dyscalculia?

Dyscalculia is about as common as dyslexia. A review of population-based studies, each testing whole school populations with standardised arithmetic tests, found prevalence rates between 3–6%. The German clinical guideline, based on a systematic review, gives 3–7% of children, adolescents and adults. In a class of 30, that is one or two pupils.

The best-known single studies agree. In Israel, 6.5% of 3,029 fourth-graders met the criteria. In a UK sample of 2,421 primary school children, 6% had persistent, severe maths difficulties and 5.7% met the criteria once other causes were excluded. In Brazil, 6.0% of 1,618 children in grades 2 to 6 had a specific learning disorder with arithmetic impairment.

The figure depends heavily on where the line is drawn. In one English sample of 1,004 children, the same data gave anything from 1–6% depending on the criteria. We found no pooled worldwide meta-analysis of dyscalculia prevalence, so this page gives the range across population studies rather than a single global number.1,5,2,3,6,7

Dyscalculia prevalence in population studies
Dyscalculia prevalence in population studiesIsrael 6.5%; Brazil 6.0%; UK 5.7%; England 5.6%; UK 1994 3.6%. Studies use different criteria.Israel, age 11: 6.5% (N = 3,029, published 1996)Israel, age 116.5%Brazil, grades 2–6: 6.0% (arithmetic impairment, N = 1,618, 2016)Brazil, grades 2–66.0%UK, primary school: 5.7% (DSM-5 criteria, N = 2,421, 2018)UK, primary school5.7%England, ages 8–9 and 12–13: 5.6% (N = 1,757, 2018)England, ages 8–9 and 12–135.6%UK, ages 9–10: 3.6% (1.3% arithmetic only + 2.3% with reading, N = 1,206, 1994)UK, ages 9–103.6%
Dyscalculia prevalence in population studies
Study populationPrevalenceSource and year
Israel, age 116.5%N = 3,029, published 19962
Brazil, grades 2–66.0%arithmetic impairment, N = 1,618, 20166
UK, primary school5.7%DSM-5 criteria, N = 2,421, 20183
England, ages 8–9 and 12–135.6%N = 1,757, 20188
UK, ages 9–103.6%1.3% arithmetic only + 2.3% with reading, N = 1,206, 19949

Dyscalculia statistics by country

The table puts the best published prevalence estimate next to the closest official count for each country. They measure different things: a prevalence study tests a sample of children against a research definition, while an official count records children a school system has identified and placed in a category. No country we checked counts dyscalculia on its own. Where we found no figure, the table says so.10,11,3,5,12,13,6,1

Dyscalculia by country: research estimates and official counts, each with its year
CountryPrevalence estimateClosest official countWhat the count covers
United States10No national prevalence study found2,408,000 students, 4.9% of public school students (2022–23)Specific learning disability under IDEA: reading, writing and maths together
England (UK)3,115.7% (UK primary school sample, 2018)180,217 pupils with specific learning difficulty as primary need (2025/26)Includes dyslexia, dyscalculia and dyspraxia; only the primary need is recorded
Germany53–7% (clinical guideline, 2019)No official figure found–
AustriaNo national figure foundNo official figure found–
SwitzerlandNo national figure foundNo official figure found–
France12No French study found; international studies 3.6–7.7% (Inserm, 2007)No official figure found–
Belgium122.3–7.7% depending on age (Flanders, N = 3,978, 2004)No official figure found–
Spain13No national figure foundLearning disorders: 26.8% of students with other specific support needs (2024–25)All learning disorders together; dyscalculia is not reported separately
MexicoNo national figure foundNo official figure found–
NetherlandsNo national figure foundNo official figure found–
Brazil66.0% arithmetic impairment, grades 2–6, four cities (2016)No official figure found–
Worldwide13–6% across population studies (review, 2000)No global count exists–

Why dyscalculia is rarely counted officially

Official categories are built for school funding and support, not for counting dyscalculia. In the US, 2,408,000 students aged 3 to 21 were served for a specific learning disability in 2022–23, 32.0% of everyone served under IDEA, but that category covers reading, writing and maths together. England records "specific learning difficulty" as one primary need that includes dyslexia, dyscalculia and dyspraxia, and Spain reports all learning disorders as one group.

Dyscalculia also gets less attention from research. A bibliometric study of 35 neurodevelopmental conditions found that the amount of research on dyslexia, dyscalculia and some other common conditions fell well below what their prevalence and severity would predict. Fewer studies and no official count make it harder for families and schools to recognise it, which is one reason many people first hear the word as adults.

Because the difficulty is not counted, it is easy to miss. The free dyscalculia test checks the basic number skills behind maths in about five minutes; it is a screening, not a diagnosis.10,11,13,14

Is dyscalculia more common in boys or girls?

Most population studies find dyscalculia in boys and girls in roughly equal numbers, which sets it apart from dyslexia. The Israeli study found 75 girls and 65 boys among the children with dyscalculia, a UK study of 9- to 10-year-olds found equal numbers, and in the UK sample of 2,421 children persistent maths difficulties were equally common in boys and girls.

Not every study agrees. In a representative German sample of 1,633 third- and fourth-graders, more girls than boys had arithmetic deficits: about 59% of the affected children were girls (our calculation from the study's table). A second study of 2,586 children also found more girls with arithmetic disorder.

The criteria matter here too. In an English sample, prevalence was the same for both sexes when a fixed maths cut-off was used, but a gender difference appeared when dyscalculia was defined as maths being much weaker than reading.2,9,7,3,15,16

Dyscalculia by sex in population studies
StudyChildrenFinding
Israel, 199623,029About equal: 75 girls, 65 boys with dyscalculia
UK, 199491,206Equal numbers of boys and girls with arithmetic difficulties
England, 201371,004Equal with a fixed cut-off; a difference only with a maths-reading gap definition
UK, 201832,421Persistent maths difficulties equally common in boys and girls
Germany, 2014151,633More girls: about 59% of children with arithmetic deficits (our calculation)

Dyscalculia with dyslexia and ADHD

Dyscalculia often comes with other difficulties. A meta-analysis behind the German guideline found that people with dyscalculia had markedly higher odds of also having dyslexia (odds ratio 12.25), and higher odds of ADHD, anxiety and depression. A separate meta-analysis found that students with a maths disability were 2.12 times more likely to also have a reading disability (95% CI 1.76–2.55). The two figures differ because the studies used different definitions and samples.

Among the 3,029 Israeli children, 17% of those with dyscalculia also had dyslexia and 26% had symptoms of ADHD. Looked at from the other side, 18.1% of 476 children with ADHD in a Canadian clinic sample had a mathematics disorder. In the UK sample, about half of the children with a dyscalculia profile had some language or communication difficulty.

Co-occurring does not mean the same thing. Children with dyslexia and children with dyscalculia show different core weaknesses, and children with both show both. For dyslexia figures, see the dyslexia statistics page on our sister site Dyslexia Steps; for the differences, see dyscalculia vs dyslexia.5,17,2,18,3,19

How often dyscalculia co-occurs with other conditions
FigureWhat it measuresSource
OR 12.255Odds of dyslexia in people with dyscalculiaGuideline meta-analysis, 2019
OR 2.1217Odds of a reading disability in students with a maths disabilityMeta-analysis, 2020
17%2Children with dyscalculia who also had dyslexia (strict reading cut-off)Israel, 1996
26%2Children with dyscalculia with symptoms of ADHDIsrael, 1996
18.1%18Children with ADHD who had a mathematics disorderCanada, 2008

Does dyscalculia last into adulthood?

Yes, for most people. The Israeli cohort was followed up three and six years after children were identified in fifth grade. After three years, 47% (57/123) still met the strict criteria; after six years, at age 17, 40% (42/104) did. At both points, 95% were still in the lowest quarter of their class in arithmetic. Most of the children who no longer met the strict cut-off still performed poorly in arithmetic.

We found no authoritative national estimate of how many adults have dyscalculia in any of the countries above. Because it is lifelong, the childhood figures are the best available guide, and the German guideline applies its range to adults as well. Our page on dyscalculia in adults describes what it looks like at work and at home.20,4,5

Children with dyscalculia, years after identification
Children with dyscalculia, years after identificationAfter 3 years 47% and after 6 years 40% still met the criteria; 95% were still in the lowest quarter.Still in the lowest quarter, 6 years later: 95% (104 children followed up, 2005)Still in the lowest quarter, 6 years later95%Still met the criteria, 3 years later: 47% (57/123 children, 1998)Still met the criteria, 3 years later47%Still met the criteria, 6 years later: 40% (42/104 children, 2005)Still met the criteria, 6 years later40%
Children with dyscalculia, years after identification
Follow-upShare of childrenSource
Still in the lowest quarter, 6 years later95%104 children followed up, 20054
Still met the criteria, 3 years later47%57/123 children, 199820
Still met the criteria, 6 years later40%42/104 children, 20054

Does dyscalculia run in families?

It does. In an Israeli family study, 66% of mothers, 40% of fathers and 53% of siblings of children with dyscalculia also met the criteria. The rate among siblings (95% CI 40–64%) was almost ten times what would be expected in the general population. The study was small, so the exact percentages are uncertain, but the direction is clear.

Twin studies point the same way. A large study of UK twins at ages 7, 9 and 10 found high heritability for maths, both for low performance and across the whole range of ability. Family history raises the risk; it does not decide the outcome.21,22

Math anxiety statistics

Math anxiety is common, and it is not the same as dyscalculia. In PISA 2012, across OECD countries, 59% of 15-year-olds said they often worry that maths classes will be difficult for them, 33% get very tense doing maths homework and 30% feel helpless doing a maths problem. In almost all countries, girls reported more maths anxiety than boys.

In an English study of 1,757 pupils, children with dyscalculia were twice as likely to have high maths anxiety as children with typical maths performance (22% against 10%). But 77% of the highly anxious children had typical or high maths performance. Anxiety and dyscalculia overlap, but most anxious children do not have dyscalculia, and most children with dyscalculia are not highly anxious.

Learning difficulties do weigh on mood. A meta-analysis of 96 studies with 83,260 participants found that people with maths or reading difficulties had more anxiety, low mood and related problems than their peers (g = −0.54), with no difference between maths and reading difficulties.23,8,24

15-year-olds reporting maths anxiety, OECD average (PISA 2012)
15-year-olds reporting maths anxiety, OECD average (PISA 2012)Worry that maths classes will be difficult 59%; very tense doing homework 33%; very nervous doing problems 31%; helpless 30%.Often worry maths classes will be difficult: 59% (OECD average, PISA 2012)Often worry maths classes will be difficult59%Get very tense doing maths homework: 33% (OECD average, PISA 2012)Get very tense doing maths homework33%Get very nervous doing maths problems: 31% (OECD average, PISA 2012)Get very nervous doing maths problems31%Feel helpless doing a maths problem: 30% (OECD average, PISA 2012)Feel helpless doing a maths problem30%
15-year-olds reporting maths anxiety, OECD average (PISA 2012)
StatementStudents agreeingSource
Often worry maths classes will be difficult59%OECD average, PISA 201223
Get very tense doing maths homework33%OECD average, PISA 201223
Get very nervous doing maths problems31%OECD average, PISA 201223
Feel helpless doing a maths problem30%OECD average, PISA 201223

Effect of dyscalculia interventions

Dyscalculia is lifelong, so these figures do not describe dyscalculia going away, and there is no recovery rate to report. They describe how much maths skills improve with teaching. Studies report this as an effect size: an effect of 0.5 means the average child who received the intervention ended up about half a standard deviation ahead of the average child in the comparison group, a moderate, real gain.

The meta-analysis behind the German guideline found a mean effect of 0.52 (95% CI 0.42–0.62) across intervention trials, with the best results for practice that targets the specific maths content a child finds hard. A meta-analysis of 15 randomised trials with 1,073 children found an average effect of 0.55 for digital interventions, and a 2026 meta-analysis of 35 studies found 0.76 for number-fact fluency practice, with wide variation between studies.

Some approaches lack evidence. Working-memory training improved working memory in the short term but showed no convincing transfer to arithmetic, and in the digital meta-analysis video games gave no extra benefit over digital drill and tutoring. The guideline also notes a shortage of good tests and programmes for older adolescents and adults. Our page on how to help with dyscalculia explains what good support looks like.5,25,26,27,28

Average effect of maths interventions in three meta-analyses
Average effect of maths interventions in three meta-analysesEffect sizes: number-fact fluency 0.76, digital interventions 0.55, all intervention trials in the German guideline 0.52.Number-fact fluency practice: 0.76 (35 studies, students with maths difficulties, 2026)Number-fact fluency practice0.76Digital interventions: 0.55 (15 randomised trials, 1,073 children, 2020)Digital interventions0.55All intervention trials (German guideline): 0.52 (dyscalculia, 2019)All intervention trials (German guideline)0.52
Average effect of maths interventions in three meta-analyses
Meta-analysisEffect sizeScope
Number-fact fluency practice0.7635 studies, students with maths difficulties, 202626
Digital interventions0.5515 randomised trials, 1,073 children, 202025
All intervention trials (German guideline)0.52dyscalculia, 20195

How these numbers were compiled

We use only peer-reviewed studies (with a PubMed or DOI record) and official statistics from national agencies and ministries. Fact pages from charities are not used as a source for numbers. Every figure shows its own year; the year in the title is the year this page was updated. Where we calculated a share ourselves, the text says so.

When we could not find a figure for a country, the table says "no official figure found" rather than borrowing one. We found no pooled worldwide meta-analysis of dyscalculia prevalence, so we report the range across population studies. Last updated 2026-10-06. Next review planned for 2027-04-06, or earlier when the US Digest of Education Statistics or England's special educational needs release publishes a new year.10,11,13,12,23

  • US: NCES Digest of Education Statistics table 204.30, school year 2022–23.
  • England: Department for Education, Special educational needs in England, 2025/26.
  • Spain: Ministry of Education statistics on students with specific support needs, 2024–25.
  • France and Belgium: Inserm collective expertise on dyslexia, dysorthographia and dyscalculia (2007).
  • Maths anxiety: OECD PISA 2012. Prevalence, sex ratio, co-occurrence, persistence and intervention effects: the studies listed under Sources.

Frequently asked questions

What percentage of the population has dyscalculia?

Population studies find dyscalculia in about 3–6% of school-age children, and the German guideline gives 3–7% for children, adolescents and adults. There is no reliable national count for adults anywhere, but dyscalculia is lifelong, so the childhood rate is the best guide.

How many people in the US have dyscalculia?

Nobody counts dyscalculia nationally in the US. The closest official figure is the 2,408,000 students aged 3 to 21 served under IDEA for a specific learning disability in 2022–23, 4.9% of public school students. That category also covers reading and writing difficulties and leaves out children who were never identified.

Is dyscalculia more common in boys or girls?

In most population studies boys and girls are affected in roughly equal numbers, unlike dyslexia. Two large German samples found more girls with arithmetic difficulties, and the result can change with the criteria used.

Is dyscalculia as common as dyslexia?

Roughly, yes. Population studies of dyscalculia find about 3–6% of children, a range similar to dyslexia and ADHD. Dyscalculia is far less researched and less often identified, so people hear about it much less.

Do children grow out of dyscalculia?

Usually not. In a six-year follow-up, 95% of children with dyscalculia were still in the lowest quarter of their class in arithmetic, and 40% still met the strict criteria at age 17. Support improves skills at every age.

How effective are dyscalculia interventions?

Targeted maths interventions have a moderate average effect: 0.52 in the meta-analysis behind the German guideline. They improve number skills and confidence; they do not make dyscalculia disappear.

Sources

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  2. Gross-Tsur V, Manor O, Shalev RS (1996). Developmental dyscalculia: prevalence and demographic features. Dev Med Child Neurol, 38(1), 25-33.
  3. Morsanyi K, van Bers BMCW, McCormack T, McGourty J (2018). The prevalence of specific learning disorder in mathematics and comorbidity with other developmental disorders in primary school-age children. Br J Psychol, 109(4), 917-940.
  4. Shalev RS, Manor O, Gross-Tsur V (2005). Developmental dyscalculia: a prospective six-year follow-up. Dev Med Child Neurol, 47(2), 121-5.
  5. Haberstroh S, Schulte-Körne G (2019). The Diagnosis and Treatment of Dyscalculia. Dtsch Arztebl Int, 116(7), 107-114.
  6. Fortes IS, Paula CS, Oliveira MC et al. (2016). A cross-sectional study to assess the prevalence of DSM-5 specific learning disorders in representative school samples from the second to sixth grade in Brazil. Eur Child Adolesc Psychiatry, 25(2), 195-207.
  7. Devine A, Soltész F, Nobes A et al. (2013). Gender differences in developmental dyscalculia depend on diagnostic criteria. Learn Instr, 27(), 31-39.
  8. Devine A, Hill F, Carey E, Szűcs D (2018). Cognitive and emotional math problems largely dissociate: prevalence of developmental dyscalculia and mathematics anxiety. J Educ Psychol, 110(3), 431-444.
  9. Lewis C, Hitch GJ, Walker P (1994). The prevalence of specific arithmetic difficulties and specific reading difficulties in 9- to 10-year-old boys and girls. J Child Psychol Psychiatry, 35(2), 283-92.
  10. National Center for Education Statistics (2023). Digest of Education Statistics, Table 204.30: Children 3 to 21 years old served under IDEA, Part B, by type of disability, 1976-77 through 2022-23. Accessed 2026-10-06.
  11. Department for Education (2026). Special educational needs in England, academic year 2025/26 (type of need). Accessed 2026-10-06.
  12. Inserm (2007). Dyslexie, dysorthographie, dyscalculie : bilan des données scientifiques. Expertise collective, chapitre 11 : Dyscalculie et troubles de l'apprentissage de l'arithmétique. Accessed 2026-10-06.
  13. Ministerio de Educación, Formación Profesional y Deportes (2026). Alumnado con necesidad específica de apoyo educativo, curso 2024-2025 (nota de prensa, 30/04/2026). Accessed 2026-10-06.
  14. Bishop DV (2010). Which neurodevelopmental disorders get researched and why? PLoS One, 5(11), e15112.
  15. Moll K, Kunze S, Neuhoff N et al. (2014). Specific learning disorder: prevalence and gender differences. PLoS One, 9(7), e103537.
  16. Landerl K, Moll K (2010). Comorbidity of learning disorders: prevalence and familial transmission. J Child Psychol Psychiatry, 51(3), 287-94.
  17. Joyner RE, Wagner RK (2020). Co-occurrence of reading disabilities and math disabilities: a meta-analysis. Sci Stud Read, 24(1), 14-22.
  18. Capano L, Minden D, Chen SX, Schacher RJ, Ickowicz A (2008). Mathematical learning disorder in school-age children with attention-deficit hyperactivity disorder. Can J Psychiatry, 53(6), 392-9.
  19. Landerl K, Fussenegger B, Moll K et al. (2009). Dyslexia and dyscalculia: two learning disorders with different cognitive profiles. J Exp Child Psychol, 103(3), 309-24.
  20. Shalev RS, Manor O, Auerbach J, Gross-Tsur V (1998). Persistence of developmental dyscalculia: what counts? Results from a 3-year prospective follow-up study. J Pediatr, 133(3), 358-62.
  21. Shalev RS, Manor O, Kerem B et al. (2001). Developmental dyscalculia is a familial learning disability. J Learn Disabil, 34(1), 59-65.
  22. Kovas Y, Haworth CM, Dale PS et al. (2007). The genetic and environmental origins of learning abilities and disabilities in the early school years. Monogr Soc Res Child Dev, 72(3), vii, 1-144.
  23. OECD (2015). Does math make you anxious? PISA in Focus No. 48 (PISA 2012 data). Accessed 2026-10-06.
  24. Vieira APA, Peng P, Antoniuk A et al. (2024). Internalizing problems in individuals with reading, mathematics and unspecified learning difficulties: a systematic review and meta-analysis. Ann Dyslexia, 74(1), 4-26.
  25. Benavides-Varela S, Zandonella Callegher C, Fagiolini B et al. (2020). Effectiveness of digital-based interventions for children with mathematical learning difficulties: a meta-analysis. Comput Educ, 157, 103953.
  26. Douglas GP, Myers JA, Mason KK, Powell SR, Lariviere DO (2026). A meta-analysis of mathematics fact fluency interventions for students with mathematics difficulties (MD). J Learn Disabil, 59(3), 135-160.
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  28. Kucian K, Grond U, Rotzer S et al. (2011). Mental number line training in children with developmental dyscalculia. Neuroimage, 57(3), 782-95.

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