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Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
, officially the Rio de Janeiro Metropolitan Region (''Grande Rio'', officially ''Região Metropolitana do Rio de Janeiro'', in Portuguese) is a large
metropolitan area A metropolitan area or metro is a region consisting of a densely populated urban area, urban agglomeration and its surrounding territories which share Industry (economics), industries, commercial areas, Transport infrastructure, transport network ...
located in
Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
state State most commonly refers to: * State (polity), a centralized political organization that regulates law and society within a territory **Sovereign state, a sovereign polity in international law, commonly referred to as a country **Nation state, a ...
in Brazil, the second largest in
Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
and third largest in South America. It consists of 22
municipalities A municipality is usually a single administrative division having municipal corporation, corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality' ...
, including the state capital,
Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
. The metropolitan area of Rio de Janeiro is known as a historical, cultural and economic centre of Brazil, with a total population of 12 million inhabitants. The region was first officially defined on July 1, 1974, less than 1 year before the fusion of Guanabara into
Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
. Several municipalities show a high level of
conurbation A conurbation is a region consisting of a number of metropolises, cities, large towns, and other urban areas which, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most ...
, with
Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
Baixada Fluminense The Baixada Fluminense (standard ; local pronounce: ) (literally " Fluminense Lowland") is a region in the state of Rio de Janeiro, in southeastern Brazil. It is located on Guanabara Bay, between Rio de Janeiro to the south and the Serra dos Ór ...
and
Niterói Niterói () is a List of municipalities in Rio de Janeiro, municipality in the state of Rio de Janeiro (state), Rio de Janeiro, in the Southeast Region, Brazil, southeast region of Brazil. It lies across Guanabara Bay, facing the city of Rio de ...
São Gonçalo being the most clear examples. It was changed several times to include or remove different cities in different moments of the history, in the years 1993, 2001, 2002, 2009, 2013 and 2018. The
water supply Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. Th ...
plans of the region are coordinated, and transportation in the area is heavily interconnected with urban intermunicipal buses to all municipalities in the area,
trains A train (from Old French , from Latin">-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ... , from Latin , "to pull, to draw") is a series of connected vehicles th ...
over the capital to some
Baixada Fluminense The Baixada Fluminense (standard ; local pronounce: ) (literally " Fluminense Lowland") is a region in the state of Rio de Janeiro, in southeastern Brazil. It is located on Guanabara Bay, between Rio de Janeiro to the south and the Serra dos Ór ...
municipalities, ferry boats to some of the Guanabara Bay
municipalities A municipality is usually a single administrative division having municipal corporation, corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality' ...
and major inter-city freeways such as the Rio–Niterói Bridge, Red Line, President Dutra freeway and the Niterói-Manilha freeway ( pt). Most transportation methods are integrated with the capital inner-transportation system of buses,
trains A train (from Old French , from Latin">-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ... , from Latin , "to pull, to draw") is a series of connected vehicles th ...
, metro, freeways and expressways.


Cities by population (2022)

1,000,000+ *
Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
: 400,000 – 999,999 * São Gonçalo: * Duque de Caxias: *
Nova Iguaçu Nova Iguaçu (, ''New Iguaçu'') is a municipality in Rio de Janeiro state in Brazil. Geography Location The city is named after the Iguaçu River that runs through it and empties into Guanabara Bay (not to be confused with the Iguaçu Rive ...
: *
Belford Roxo Belford Roxo () is a city in the Rio de Janeiro (state), state of Rio de Janeiro, Brazil. It is a part of the metropolitan region of the city of Rio de Janeiro and was created in 1990. Its population was 513,118 in 2020 and its area is 79 km² ...
: *
Niterói Niterói () is a List of municipalities in Rio de Janeiro, municipality in the state of Rio de Janeiro (state), Rio de Janeiro, in the Southeast Region, Brazil, southeast region of Brazil. It lies across Guanabara Bay, facing the city of Rio de ...
: *
São João de Meriti São João de Meriti () is a Brazilian municipality in the state of Rio de Janeiro. Its historical name was São João do Rio Meriti. Its population was 440,962 inhabitants in 2022. It is located in the region of Baixada Fluminense, having 34.99 ...
: 100,000 – 399,999 * Petrópolis: *
Magé Magé () is a List of municipalities in Rio de Janeiro, municipality located in the States of Brazil, Brazilian state of Rio de Janeiro (state), Rio de Janeiro. ''Magepe-Mirim'' () was established in 1566 by Portuguese colonists. It is considered ...
: * Itaboraí: * Maricá: * Mesquita: * Nilópolis: * Queimados: * Itaguaí: 0 - 100,000 * Japeri: * Seropédica: * Cachoeiras de Macacu: * Rio Bonito: * Guapimirim: * Paracambi: * Tanguá:


Statistics

* Population: (2022) ** Most populous city:
Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
: (2018 est.) * Nominal GDP: R$413.93 Billion ** Largest GDP City: Rio de Janeiro City: R$282.5 billion (2013 est.) * Nominal GDP per capita: R$33,856.54 (2013 est.) * HDI: 0,771 (2010 est.) ** Highest HDI City:
Niterói Niterói () is a List of municipalities in Rio de Janeiro, municipality in the state of Rio de Janeiro (state), Rio de Janeiro, in the Southeast Region, Brazil, southeast region of Brazil. It lies across Guanabara Bay, facing the city of Rio de ...
: 0,837 (2010 est.)


Municipalities

The 22 municipalities of the area are:https://cidades.ibge.gov.br/


Notes and references

{{DEFAULTSORT:Greater Rio De Janeiro Populated places in Rio de Janeiro (state) Metropolitan areas of Brazil Guanabara Bay