ADHD Statistics

Number of children 3-17 years of age ever diagnosed with ADHD: 4.5 million
Percent of children 3-17 years of age ever diagnosed with ADHD: 7.2%
Percent of boys 3-17 years of age ever diagnosed with ADHD: 10%
Percent of girls 3-17 years of age ever diagnosed with ADHD 4.3%
Source: Summary Health Statistics for U.S. Children: National Health Interview Survey, 2007, Appendix III, Table VI