Less than 1% of the United States population has a PhD degree.
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Approximately 1% of the world's population holds a Ph.D. degree. This small percentage reflects the specialization and advanced level of education required to obtain a Ph.D.
In the U.S. there are less than three percent of people with a PhD. Worldwide it is closer to one percent or lower.
About 1% of the world's population holds a PhD.
Massachusetts has the highest percentage of residents with a PhD, with approximately 2.37% of its population holding this advanced degree.
According to US 2000 Census, 1,754,331 of population over 25 years of age have a doctoral degree (PhD, EdD, etc). This is under one percent of population (0.96) in this age group. Including people with professional degrees who are normally referred to with Dr title like physicians, dentists, etc (MD, DDS, etc) 5,373,866 (2.95%) of US population over 25 carry doctor title.
Less than 2% of the U.S. population holds both a JD and a PhD. These degrees involve rigorous academic and professional training, leading to a small proportion of individuals holding both simultaneously.
Approximately 30% of Canadians hold a bachelor's degree.