Just crunching some numbers here, and these are rough estimates, presented without comment:<p>- Norway: 4,000 prisoners / 5M population (0.08% incarceration)<p>- United Kingdom: 84,000 prisoners / 63M pop. (0.13%)<p>- United States: 2,270,000 prisoners / 317M pop. (0.72%)<p>The US prison population rises to about 7M when you include everyone "under correctional supervision" (e.g., in probation, on parole, in jail, etc.), increasing to a >2% figure. But I don't have apples-to-apples figures for the UK and Norway in this regard.