Child marriage is generally more common in the Southern United States.
According to Pew Research Center, the highest incidence of child marriages is in West Virginia, Texas, Nevada, Oklahoma, Arkansas, California, Tennessee, and North Carolina.
According to Frontline and Unchained At Last, the states with the highest rates (not incidence) of child marriage in 2010 were: Idaho, Utah, Arizona, Texas, Mississippi, Alabama, Arkansas, Kentucky, West Virginia and Missouri. Meanwhile the states with the lowest rates were Delaware, New Jersey, Montana, Indiana, North Dakota, Ohio, New York, Vermont, New Hampshire and Massachusetts. However, data was not available for 10 states including California, North Carolina, Georgia and Oklahoma.
The Koski/Heymann study found prevalence of child marriage varied from more than 10 per 1,000 in West Virginia, Hawaii and North Dakota to less than four per 1,000 in Maine, Rhode Island and Wyoming.