Northwest Zone

• Oregon
• Washington

Pacific Zone

• Alaska
• California
• Hawaii

Desert Zone

• Arizona
• Nevada

Rocky Mountain Zone

• Colorado
• Idaho
• Montana
• New Mexico
• Utah
• Wyoming

Midwestern Zone

• Illinois
• Iowa
• Kentucky
• Indiana
• Michigan
• Minnesota
• Missouri
• Ohio
• Wisconsin

Central Zone

• Kansas
• Nebraska
• North Dakota
• South Dakota

South Central Zone

• Arkansas
• Louisiana
• Oklahoma
• Texas

New England Zone

• Connecticut
• Maine
• New Hampshire
• Massachusetts
• Rhode Island
• Vermont

Eastern Zone

• Delaware
• New Jersey
• New York
• Pennsylvania

Mid-Atlantic Zone

• District of Columbia
• Maryland
• North Carolina
• Virginia
• West Virginia

Southeastern Zone

• Alabama
• Florida
• Georgia
• Mississippi
• South Carolina
• Tennessee