"In every state, the proportion of blacks in prison exceeds, sometimes by a considerable amount, their proportion in the general population (Figure 2). In Minnesota and Iowa, blacks constitute a share of the prison population that is twelve times greater than their share of the state population. In eleven states -- Kansas, Montana, Nebraska, New Hampshire, Oregon, Rhode Island, South Dakota, Utah, Washington, Wisconsin, and Wyoming --the percentage of the
prison population that is black is more than six times greater than the percentage of the state population that is black."
United States - Punishment and Prejudice: Racial Disparities in the War on Drugs