ClinicalTrials.gov currently lists 214,504 studies with locations in all 50 States and in 193 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 (54%)
color U.S. only (40%)
color Both U.S. and non-U.S. (6%)
Total N = 37,922 studies
(Data as of May 02, 2016)