Rio de Janeiro (state)

Lore & Background

According to some historians, the name given was originally 'Ria de Janeiro' ('January Ria'), but confusion between 'ria' and 'rio' led to the name Rio de Janeiro. The term carioca, first attested in the 18th century, became the demonym for the city after the 1975 merger of Guanabara State into Rio de Janeiro State.

Reader's Guide

Its economy, the second largest in Brazil, is driven by oil production—the state produces 80% of Brazil's oil—and by its port, which historically exported gold from Minas Gerais. The state's political history includes the 1975 merger with Guanabara State, and its recent economic challenges have been linked to fluctuating oil revenues and political decisions. The state is represented in the Brazilian flag by the beta star Mimosa in the Southern Cross.

Did You Know?

• Rio de Janeiro is the smallest state by area in the Southeast macroregion but the most densely populated in Brazil.
• The state's coastline is not among the three longest in Brazil.
• The state is responsible for 9.2% of the Brazilian GDP while having 8.2% of the population.

A Capital That Defied the Colonial Order

Rio de Janeiro occupies a singular position in world history. Under Prince Regent John of Braganza, Brazil was elevated to kingdom status within the United Kingdom of Portugal, Brazil, and the Algarves. This made Rio the capital of a pluricontinental monarchy — a first and, as the record shows, the only instance in modern history in which a colonizing nation officially shifted its capital to a city within one of its own colonies. The city retained that capital role through the Empire of Brazil until 1889 and continued as republican Brazil's seat of government until 1960, when Brasília was inaugurated. The sudden arrival of hundreds of nobles forced the eviction of local residents, yet the era also produced lasting institutions: the National Library of Brazil, the Botanical Garden, the Military Academy, and the Gazeta do Rio de Janeiro, the country's first printed newspaper.

Economic Engine and Research Hub

Rio de Janeiro punches well above its weight in Brazil's economic landscape. The city anchors the headquarters of two of Brazil's largest corporations — Petrobras in oil and Vale in mining — along with Grupo Globo, Latin America's biggest telemedia conglomerate. The city hosts numerous universities and research institutes that sustain this intellectual infrastructure. Despite a persistent public perception of high crime, the actual incidence of crime in Rio is lower than in most other Brazilian state capitals, a nuance that complicates the city's international reputation.

Stage for the World

Rio de Janeiro has repeatedly placed itself at the center of global spectacle. Beyond mega-events, Rio's cultural identity is woven into its physical landscape: the Sambódromo hosts Carnival parades, Christ the Redeemer atop Corcovado was named one of the New Seven Wonders of the World, and Sugarloaf Mountain offers sweeping views via cable car. The beaches of Copacabana, Ipanema, Leblon, and Barra da Tijuca, alongside the rhythms of samba and bossa nova, define the city's global image.

From French Forts to Portuguese Founding

The story of Rio de Janeiro begins with a name rooted in a calendar date. The region had long been home to Tupi, Puri, Botocudo, and Maxakalí peoples. The Portuguese, viewing this as a serious strategic threat, launched a years-long military campaign under Governor General Mem de Sá and later his nephew Estácio de Sá. For decades afterward, the settlement faced repeated incursions by French pirates and buccaneers, underscoring how contested this strategic harbor truly was.