ParlAmericas membership is composed of the national legislatures of the 35 independent states of the Americas. To observe a balance in regional representation, the hemisphere has been divided into the following four sub-regions: North, Central, and South America, and the Caribbean.

North America
	Canada	Ottawa	House of Commons Senate
	Mexico	Mexico City	Chamber of Deputies Senate
	United States	Washington, DC	House of Representatives Senate
Central America
	Belize	Belmopan	House of Representatives Senate
	Costa Rica	San Jose	Legislative Assembly
	El Salvador	San Salvador	Legislative Assembly
	Guatemala	Guatemala City	Congress of the Republic
	Honduras	Tegucigalpa	National Congress
	Nicaragua	Managua	National Assembly
	Panama	Panama City	National Assembly
Caribbean
	Antigua and Barbuda	St. John’s	House of Representatives Senate
	The Bahamas	Nassau	House of Assembly Senate
	Barbados	Bridgetown	House of Assembly Senate
	Cuba	Havana	National Assembly of People’s Power of Cuba
	Dominica	Roseau	House of Assembly
	Dominican Republic	Santo Domingo	Chamber of Deputies Senate
	Grenada	St. George’s	House of Representatives Senate
	Haiti	Port-au-Prince	Chamber of Deputies Senate
	Jamaica	Kingston	House of Representatives Senate
	Saint Kitts and Nevis	Basseterre	National Assembly
	Saint Lucia	Castries	House of Assembly Senate
	Saint Vincent and the Grenadines	Kingstown	House of Assembly
	Trinidad and Tobago	Port of Spain	House of Representatives Senate
South America
	Argentina	Buenos Aires	Chamber of Deputies Senate
	Bolivia	Sucre (seat of government: La Paz)	Chamber of Deputies Chamber of Senators
	Brazil	Brasilia	Chamber of Deputies Federal Senate
	Chile	Santiago (seat of government: Valparaiso)	Chamber of Deputies Senate
	Colombia	Bogota	Chamber of Representatives Senate
	Ecuador	Quito	National Assembly
	Guyana	Georgetown	National Assembly
	Paraguay	Asuncion	Chamber of Deputies Chamber of Senators
	Peru	Lima	Congress of the Republic
	Suriname	Paramaribo	National Assembly
	Uruguay	Montevideo	Chamber of Representatives Chamber of Senators
	Venezuela	Caracas	National Assembly