Incarceration rates for adult males in U.S. jails and prisons by race and ethnicity. On June 30, 2006, an estimated 4.8% of black non-Hispanic men were in prison or jail, compared to 1.9% of Hispanic men of any race, and 0.7% of white non-Hispanic men. Image and data sources. More info: The Drug War causes the high U.S. incarceration rates. See template.