| Region 1 - responsible within the states of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont |
| Region 2 - responsible within the states of New Jersey, New York and the territories of Puerto Rico and the U.S. Virgin Islands |
| Region 3 - responsible within the states of Delaware, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia |
| Region 4 - responsible within the states of Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee |
| Region 5 - responsible within the states of Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin |
| Region 6 - responsible within the states of Arkansas, Louisiana, New Mexico, Oklahoma, and Texas |
| Region 7 - responsible within the states of Iowa, Kansas, Missouri, and Nebraska |
| Region 8 - responsible within the states of Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming |
| Region 9 - responsible within the states of Arizona, California, Hawaii, Nevada, and the territories of Guam and American Samoa |
| Region 10 - responsible within the states of Alaska, Idaho, Oregon, and Washington |