United States incarceration rate
The incarceration rate in the United States of America is the highest in the world. As of 2009[update], the incarceration rate was 743 per 100,000 of national population (0.743%). While the United States represents about 5 percent of the world's population, it houses around 25 percent of the world's prisoners. Imprisonment of America's 2.3 million prisoners, costing $24,000 per inmate per year, and $5.1 billion in new prison construction, consumes $60.3 billion in budget expenditures. Prison population The United States has the highest documented incarceration rate in the world, at 754 per 100,000 (as of 2009[update]). As of December 31, 2010, the International Centre for Prison Studies (ICPS) at King's College London estimated 2,266,832 prisoners from a total population of 310.64 million as of this date (730 per 100,000 in 2010). The imprisonment rate varies widely by state; Louisiana surpasses this by about 100%, but Maine incarcerates at about a fifth this rate.
Related: Terence McKenna