- Central Chapter - Wyoming, Colorado, Nebraska, Iowa, Kansas, Missouri, North Dakota, South Dakota, Saskatchewan, Manitoba
- Great Lakes Chapter - Michigan, Ohio, Illinois, Indiana, Kentucky, Minnesota, Wisconsin, Ontario, and Quebec
- Mid-Atlantic Chapter - Virginia, West Virginia, Maryland, North Carolina, South Carolina, District of Columbia
- Northeast Chapter - Pennsylvania, New York, Vermont, New Hampshire, Connecticut, Massachusetts, Maine, Rhode Island, Delaware, New Jersey, Newfoundland and the Maritime Provinces
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- Northwest Chapter - Oregon, Washington, British Columbia, Alberta, Montana, Idaho, Alaska
- South Central Chapter - Arkansas, Oklahoma, Texas
- Southern Chapter - Florida, Georgia, Alabama, Mississippi, Puerto Rico, Tennessee, Louisiana and The Virgin Islands
- Southwest Chapter - Arizona, Hawaii, California, Nevada, Utah, New Mexico and Guam
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