| CODE | REGION | STATES |
| 1 | Atlantic | Delaware, New Jersey, Washington DC, Pennsylvania, West Virginia, Virginia and Maryland |
| 2 | Central East | Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Kansas, Ohio, Wisconsin, Kentucky, Tennessee and Alabama |
| 3 | Central West | Nebraska, North Dakota, Oklahoma, Colorado, South Dakota, Texas, Wyoming, New Mexico, Louisiana, Mississippi and Arkansas |
| 4 | New York | New York |
| 5 | North East | Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont |
| 6 | South East | Florida, Georgia, North Carolina, South Carolina and Puerto Rico |
| 7 | West | Alaska, Arizona, California, Oregon, Idaho, Hawaii, Nevada, Utah and Washington |
