Government and public statistics
Stuttering
National Institute on Deafness and Other Communication Disorders (NIDCD), NIH, 2017
Read the originalRead on October 16, 2026
- What it is
- The NIDCD's health information page on stuttering: what it is, who stutters, how common it is in children and adults, causes and treatment.
- How much weight it carries
- Official US National Institutes of Health health information (NIH Pub. No. 97-4232, February 2016; page last updated March 2017). The prevalence figure is a rounded estimate without a stated survey year or method on the page.
Facts taken from this source
- Roughly 3 million Americans stutter; stuttering affects people of all ages and occurs most often in children aged 2 to 6.
“Roughly 3 million Americans stutter. Stuttering affects people of all ages. It occurs most often in children between the ages of 2 and 6 as they are developing their language skills.” (Who stutters?)