Worldwide approximately one-third of males are circumcised by adulthood [World Health Organization, 2008a], most of these having been done during childhood, either soon after birth or prior to puberty.
USA: Rate is approx. 90% in the white population of males. The overall rate in the USA is ~79%, with rate varying by race and ethnicity, being 88% in non-Hispanic whites, 73% in blacks, 42% in Mexican-Americans and 50% in others.
UK: 16% of 16-44 year-olds, 20% in those aged 40-44 and 12% in the 16-19 year age group.
Canada: Approx. 50% overall, but varies by region and age group.
Australia: ~60%. The rate was 69% for those who were born in Australia.
New Zealand: Between 30%-40%
SUB-SAHARAN AFRICA: Overall rate is 62%
ASIA: Generally: 8 out of 27 South and Southeast Asian countries have high rates of circumcision.
South Korea: 90-95%
CENTRAL AND SOUTH AMERICA:
Brazil & Columbia: 7%