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Regions are composed of groups, intergroups, and service boards within specified geographic boundaries and the virtual community. OA is divided into ten regions.
Region One
Pacific Northwest: Alaska, Idaho, Montana, Oregon, Washington, Wyoming, Alberta, British Columbia, Manitoba, Northwest Territories, Nunavut, Saskatchewan, and Yukon.
Region Two
Pacific Southwest: California, Hawaii, Reno/Tahoe area of Nevada, and Mexico.
Region Three
Southwest: Arizona, Colorado, Central and West Iowa, Kansas, Nebraska, Nevada, New Mexico, Oklahoma, South Dakota, Texas, and Utah.
Region Five
Central: East Iowa, Illinois, Indiana, Kentucky, Michigan, Minnesota, Missouri (except the Greater Ozarks Intergroup), North Dakota, Ohio, and Wisconsin.
Region Six
Northeast: Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, Quebec, and Bermuda.
Region Seven
Eastern: Delaware, District of Columbia, Maryland, New Jersey, Pennsylvania, Virginia, and West Virginia.
Region Eight
The Southeast Region: Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, Puerto Rico, South Carolina, Tennessee, the Greater Ozarks Intergroup, the US Virgin Islands, the Caribbean Islands, Central America, and South America.
Countries in Region Eight
Anguilla, Antigua and Barbuda, Argentina, Aruba, The Bahamas, Barbados, Bay Islands Department, Belize, Bolivia, Bonaire, Brazil, British Virgin Islands, Cayman Islands, Chile, Colombia, Costa Rica, Cuba, Curaçao, Dominica, Dominican Republic, Ecuador, El Salvador, Falkland Islands, Federal Dependencies of Venezuela, French Guiana, Grenada, Guadeloupe, Guyana, Haiti, Honduras, Jamaica, Martinique, Montserrat, Navassa Island, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Quintana Roo, Saba, San Andrés and Providencia, Saint Barthélemy, Saint Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines, Sint Eustatius, Suriname, southeastern United States, Trinidad and Tobago, Turks and Caicos Islands, United States Virgin Islands, Uruguay, and Venezuela.
Region Nine
Countries and territories in Australia, East Asia, New Zealand, Southeast Asia, and the Western Pacific Basin.
Countries in Region Nine
Afghanistan, Albania, Algeria, Andorra, Angola, Armenia, Austria, Azerbaijan, Bahrain, Belarus, Belgium, Benin, Bosnia and Herzegovina, Botswana, Bulgaria, Burkina Faso, Burundi, Cabo Verde, Cameroon, Central African Republic, Chad, Comoros, Croatia, Cyprus, Czech Republic, Democratic Republic of the Congo, Denmark, Djibouti, Egypt, Equatorial Guinea, Eritrea, Estonia, Eswatini (Swaziland), Ethiopia, Finland, France, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Guinea, Guinea-Bissau, Hungary, Iceland, India, Iran, Iraq, Ireland, Israel, Italy, Ivory Coast, Jordan, Kazakhstan, Kenya, Kosovo, Kuwait, Kyrgyzstan, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Maldives, Mali, Malta, Mauritania, Mauritius, Moldova, Monaco, Montenegro, Morocco, Mozambique, Namibia, Netherlands, Niger, Nigeria, North Macedonia, Norway, Oman, Pakistan, Palestine, Poland, Portugal, Qatar, Romania, Russia, Rwanda, San Marino, São Tomé and Príncipe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Slovakia, Slovenia, Somalia, South Africa, South Sudan, Spain, Sudan, Sweden, Switzerland, Syria, Tajikistan, Tanzania, Togo, Tunisia, Turkey, Turkmenistan, Uganda, Ukraine, United Arab Emirates, United Kingdom, Uzbekistan, Vatican City, Yemen, Zambia, and Zimbabwe.
Region Ten
Countries and territories in Australia, East Asia, New Zealand, Southeast Asia, and the Western Pacific Basin.
Countries in Region Ten
Australia, Bangladesh, Bhutan, Brunei, Cambodia, China, Indonesia, Laos, Malaysia, Mongolia, Myanmar (Burma), Nepal, New Zealand, North Korea, Philippines, Singapore, South Korea, Sri Lanka, Thailand, Timor-Leste (East Timor), and Vietnam.
Virtual Region
Nongeographic: Virtual groups and virtual intergroups
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