ClinicalTrials.gov currently lists 223,969 studies with locations in all 50 States and in 192 countries.

Locations of Recruiting Studies

Recruiting Study Location Count Pie Chart
Legend for Recruiting Study location pie chart image
Pie Color Location
color Non-U.S. only (55%)
color U.S. only (39%)
color Both U.S. and non-U.S. (5%)
Total N = 39,602 studies
(Data as of August 29, 2016)