The United States had the second highest prisoner rate, with 693 prisoners per 100,000 of the national population, according to the Human Rights Record of the United States in 2016 released by China on Thursday.
"Roughly 2.2 million people were incarcerated in the United States in 2014," the report cites data released by a U.S. market research firm as saying.
There had been 70 million Americans incarcerated - that's almost one in three adults - with some form of criminal record, it says.
Occurrence of gun-related crimes also sustained a high level, according to the report.
According to data released by the FBI on Sept. 26, 2016, firearms were used in 71.5 percent of the nation's murders, 40.8 percent of robberies, and 24.2 percent of aggravated assaults in 2015, it says.
There were a total of 58,125 gun violence incidents, including 385 mass shootings, in the United States in 2016, leaving 15,039 killed and 30,589 injured, the report cites a toll report by the Gun Violence Archive as saying.
