New England (Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont)

Middle Atlantic (New Jersey, New York, Pennsylvania)

South Atlantic (Delaware, District of Columbia, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, West Virginia)

East South Central (Alabama, Kentucky, Mississippi, Tennessee)

East North Central (Illinois, Indiana, Michigan, Ohio, Wisconsin)

West South Central  (Arkansas, Louisiana, Oklahoma, Texas)

West North Central (Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota)

Mountain (Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming)

Pacific (California, Hawaii, Oregon, Washington)