Look a little crowded? According to a report from the Kings College in London now its latest, greatest "World Prison Population List. Check this:
More than 9.8 million people are held in penal institutions throughout the world, mostly as pre-trial detainees (remand prisoners) or as sentenced prisoners.
Almost half of these are in the United States (2.29m), Russia (0.89m) or China (1.57m sentenced prisoners). The United States has the highest prison population rate in the world, 756 per 100,000 of the national population, followed by Russia (629), Rwanda (604), St Kitts & Nevis (588), Cuba (c.531), U.S. Virgin Is. (512), British Virgin Is. (488), Palau (478), Belarus (468), Belize (455), Bahamas (422), Georgia (415), American Samoa (410), Grenada (408) and Anguilla (401).
More info at Sentencing Law and Policy and Grits for Breakfast.