The bureau's researchers report that the number of individuals incarcerated grew by 1,900 people over the course of last year — "reversing a five-year decline since 2008."

It's not all bad news, though. The researchers also report that there was a decrease in overall adults supervised by correctional systems — meaning included in community supervision or parole. In 2014, there were "about 52,200 fewer offenders than at year-end 2013."

Their report found that just seven jurisdictions "accounted for almost half of the U.S. correctional population at year-end 2014," with Texas topping the list with 699,300 offenders. Overall, "about one in 36 adults in the United States was under some form of correctional supervision at year-end 2014."