Est.	GEOGRAPHY	CHAPTER	DISTRICT/S REGION/S
	Illinois, Missouri, most of Wisconsin	Central Midwest	Central Midwest
2003	Michigan, Indiana, Kentucky	Heartland	Heartland
2000	New Jersey, Delaware, Maryland, Washington D.C. North Virginia (Divided into northern and southern clusters)	Joseph Priestley	Joseph Priestley
	New York City	Metro New York	Metro New York
	Montana, Wyoming, Utah, Colorado, New Mexico	Mountain Desert	Mountain District
1993	Maine, Massachusetts, New Hampshire, Vermont, Rhode Island	North Atlantic	Ballou-Channing, Clara Barton, Northern New England, Mass Bay
	Ohio, West Virginia, part of Pennsylvania, part of Ohio	Ohio-Meadville	Ohio-Meadville
	Upper half of California and Nevada, Hawaii	Pacific Central	Pacific Central
	British Columbia, Washington, Oregon, part of Idaho, Alaska	Pacific Northwest	Pacific Northwest District, British Columbia Region
	Arizona, lower half of California, part of Nevada	Pacific Southwest	Pacific Southwest
2005	Minnesota, Iowa, North Dakota, South Dakota, part of Kansas, Wisconsin and Nebraska	Prairie Star	Prairie Star
2003	New York, Ontario and Quebec	Seaway	Saint Lawrence District, Central & Eastern Regions
2003	Alabama, Georgia, Florida, Mississippi, North Carolina, South Carolina, Virginia	Southeast	Florida, Mid-South &Thomas Jefferson Districts
2005	Arkansas, Oklahoma, Texas, Louisiana, Texas, parts of southwestern Missouri and western Tennessee (Memphis area)	Southwest	Southwest District

NO CHAPTERS YET: Part of the Eastern Region (New Brunswick, Newfoundland and Labrador, Nova Scotia, and Prince Edward Island), the Western Region (Alberta, Saskatchewan, and Manitoba)