Silver covers one of these regions, Gold covers any three, and Platinum covers all eight.
Middle Atlantic
Delaware, District of Columbia, Maryland, New Jersey, New York, Pennsylvania, Puerto Rico, US Virgin Islands
Mountain Plains
Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming
New England
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
North Central
Illinois, Indiana, Iowa, Michigan, Minnesota, Nebraska, Ohio, Wisconsin
Pacific Northwest
Alaska, Idaho, Oregon, Washington
Pacific Southwest
Arizona, California, Hawaii, Nevada, Pacific territories
South Eastern
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia
Southwest
Arkansas, Kansas, Louisiana, Missouri, New Mexico, Oklahoma, Texas