ClinicalTrials.gov currently lists 193,645 studies with locations in all 50 States and in 190 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 (53%)
color U.S. Only (41%)
color Both U.S. and Non-U.S. (6%)
Total N = 35,980 studies
(Data as of June 30, 2015)