US Federal Region Map Region 1 Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont Region 2 New Jersey, New York Region 3 Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia Region 4 Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee Region 5 Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin Region 6 Arkansas, Louisiana, New Mexico, Oklahoma, Texas Region 7 Iowa, Kansas, Missouri, Nebraska Region 8 Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming Region 9 Arizona, California, Hawaii, Nevada Region 10 Alaska, Idaho, Oregon, Washington    Source: Energy Information Administration, Office of Coal, Nuclear, Electric and Alternate Fuels.