What Is a Favela, Really? Inside Brazil’s Hillside Communities
Living in Brazil
Key Facts
—Population. Brazil’s 2022 census (IBGE) counted 16.4 million people — 8.1% of the national population — living in 12,348 favelas and urban communities across 656 municipalities.
—Rio concentration. The city of Rio de Janeiro alone hosts roughly 1.4 million favela residents, according to the Rio city government’s Instituto Pereira Passos. Rocinha is Brazil’s most populous favela, with 72,021 residents counted in the 2022 census.
—Land prices. Informal land transactions in Rio’s established favelas reached R$8,000–15,000 per square meter in 2025, per Fundação João Pinheiro research — approaching formal-market levels in some cases.
—Security. The UPP pacification program, launched in 2008, peaked at 38 units in 2014 but was effectively dismantled by 2022. The program has since been effectively dismantled; only a handful of UPP units remain operational in Rio.
—Services. Roughly 55% of favela households have formal garbage collection, 72% have piped water, and 68% have sewage connections — all well below national averages but sharply improved since 2000, per IBGE’s SNIS database (2024).
Brazil’s favelas are not slums in the conventional sense — they are dense, self-built neighborhoods with formalizing property markets, small businesses, and a political history that shaped modern Rio. Understanding them means looking past the stereotype.
What the Word Actually Means
“Favela” first appeared in the late 19th century, named after the favela tree (Cnidoscolus quercifolius) native to Brazil’s Northeast. The name stuck to a hillside settlement in Rio’s Centro district where veterans of the Canudos War (1896–1897) were promised land that never materialized. They built their own homes on a steep slope, and the term migrated with every subsequent informal settlement.
The legal definition, used by IBGE since the 1991 census, is precise: a favela is an “informal settlement” with at least 51 housing units, occupying public or private land without formal title, and generally characterized by substandard public services and irregular street patterns. The definition excludes formal social-housing projects (conjuntos habitacionais) and rural squatting.
That legal precision matters because it distinguishes favelas from other forms of informal housing. In São Paulo, the equivalent is the cortiço — a subdivided tenement, often in the city center. In the Northeast, rural land invasions follow different dynamics. The favela is specifically urban, specifically self-built, and specifically rooted in Rio’s geography and labor-market history.
The Scale: 16.4 Million People in Numbers
The 2022 census was the first to map favelas nationally with georeferenced data, under a new “Favelas and Urban Communities” terminology, and the number surprised even researchers. Brazil’s 12,348 favelas house 16.4 million people — more than the population of Portugal. The distribution is uneven: the Southeast (Rio, São Paulo, Belo Horizonte) accounts for 43.4% of all favela residents, while the Northeast, Brazil’s poorest region, accounts for 28.3%.
Rio de Janeiro remains the symbolic center. The city’s 1,000-plus favelas contain roughly 22% of its population, making Rio one of the most spatially segregated major cities in the Americas. Rocinha, in the South Zone between São Conrado and Gávea, is the country’s most populous single favela with 72,021 residents in the 2022 census; the Complexo do Alemão cluster in the North Zone is of comparable scale and far more spread out.
The growth rate has been striking. Between 2010 and 2022, the favela population grew 43.5% — from 11.4 million to 16.4 million — far faster than the national population, though IBGE cautions that improved mapping accounts for part of the increase. Favelas are also densifying. New arrivals are building upward rather than outward, with three- and four-story concrete structures replacing the wooden shacks of the 1980s and 1990s.
Property, Commerce, and the Formalizing Economy
The most important economic shift in favelas over the past two decades is the emergence of formal property markets. Because favela land is occupied without title, transactions occur through informal mechanisms: the “direito de posse” (right of possession) is bought and sold with handwritten contracts, neighborhood-association witnesses, and occasionally notarized agreements. The Fundação João Pinheiro, a Minas Gerais research institute that has tracked informal land markets since 2005, found that prices in established Rio favelas approached formal-market levels by 2025.
In Rocinha, a two-room concrete house on a paved street can sell for R$150,000–250,000. In Vidigal, a smaller South Zone favela with ocean views, prices have reached R$300,000. The driver is not gentrification in the North American sense — it is the absence of alternatives. For working-class families excluded from Rio’s formal mortgage market by income requirements and documentation, the favela is the only affordable option in a city where formal apartments average R$12,000 per square meter.
Commerce has formalized too. The Brazilian Micro and Small Business Support Service (SEBRAE) estimates that favelas contain roughly 40,000 registered small businesses in Rio state alone, from construction material suppliers to beauty salons. Many operate without CNPJ (corporate tax ID), but an increasing number have formalized to access government contracts and digital payment systems. Pix, Brazil’s instant-payment system launched by the Central Bank in 2020, has been particularly transformative: even unregistered vendors now accept digital payments.
Security: From UPPs to Militias
The most consequential public-policy experiment in favelas this century was the UPP (Unidade de Polícia Pacificadora), launched in Rio in 2008. The model was simple: permanently station police units in favelas previously controlled by drug trafficking factions, push out the armed groups, and invest in public services. At its peak in 2014, 38 UPPs covered roughly 500,000 residents. Homicide rates in UPP favelas fell by an estimated 60% between 2008 and 2012, according to research by Ignacio Cano at Rio’s State University (UERJ).
The collapse was equally dramatic. By 2016, budget cuts, police corruption, and the return of armed groups had hollowed out the program. The 2018 election of Jair Bolsonaro, who campaigned on a hardline security platform, accelerated the shift away from community policing toward military-style operations. By 2022, most UPPs had been withdrawn or converted into ordinary police posts. Today only a handful of units remain operational, and the state government no longer presents the UPPs as the backbone of its security strategy.
What replaced the UPPs is more complex. In some favelas, drug trafficking factions — primarily the Comando Vermelho (Red Command) and Terceiro Comando Puro — have reasserted control. In others, a newer phenomenon has emerged: militias. These are paramilitary groups formed by current and former police officers that extort residents for “protection” fees and control access to utilities, transport, and construction permits. A 2024 report by Rio’s Public Defenders’ Office found that militias controlled an estimated 57% of the city’s favela territory, up from 34% in 2018.
Services, Infrastructure, and the Role of NGOs
The stereotype of favelas as lacking basic services is outdated for the largest communities but still accurate for smaller, more remote settlements. IBGE’s National Sanitation Information System (SNIS) for 2024 shows that 72% of favela households have piped water, 68% have sewage connections, and 55% have formal garbage collection. Those figures represent massive improvements since 2000, when the comparable numbers were roughly 40%, 25%, and 30%.
The gap between favelas and formal neighborhoods, however, remains significant. Nationally, 92% of households have piped water and 85% have sewage connections. The favela deficit is most acute in smaller cities of the Northeast and North, where municipal governments lack the resources and technical capacity to extend networks into steep, irregular terrain.
Non-governmental organizations have filled part of the gap. The NGO Viva Rio operates health clinics and vocational training centers in several favelas. The Catalytic Communities network has documented favela architecture and urbanism since 1999, producing research that has influenced municipal zoning decisions. And community associations — often the only formal institution in a favela — negotiate with utilities, document residents, and organize protests when services are interrupted.
What Favelas Mean for Brazil’s Future
For a foreign reader, the favela is often reduced to a backdrop for crime stories or a destination for poverty tourism. That framing misses the point. Favelas are where roughly 8% of Brazilians live, work, vote, and build businesses. They are not temporary encampments — many have existed for 80 years or more, with third-generation residents who have never lived anywhere else.
The policy question is whether Brazil will integrate these neighborhoods into the formal city or continue to manage them as exceptions. The trend since 2018 has been toward containment rather than integration: more police operations, fewer social programs, and a federal government under President Luiz Inácio Lula da Silva that has focused on cash transfers (Bolsa Família) rather than urban upgrading. The housing deficit — estimated at 5.8 million units nationwide by the Ministry of Cities in 2023 — is not being addressed at scale.
What is changing is the favela economy. Digital payments, e-commerce, and remote work have connected favela entrepreneurs to markets far beyond their neighborhoods. The question for the next decade is whether that economic dynamism can outpace the security crisis, the infrastructure deficit, and the political neglect that have defined favela policy for a century.
Frequently Asked Questions
How many people live in favelas in Brazil?
The 2022 IBGE census counted 16.4 million people in 12,348 favelas — 8.1% of Brazil’s population.
What is the difference between a favela and a slum?
A favela is a specific type of informal settlement: self-built housing on occupied land, generally in urban areas, with substandard services. “Slum” is a broader, less precise term. Favelas have existed for generations and have developed formalizing property markets and local institutions.
Are favelas dangerous for visitors?
Security varies sharply by favela and by who controls it. Some, like Vidigal, have become relatively safe for tourists with guided tours. Others remain controlled by armed groups where outsiders face serious risk. There is no universal answer — local knowledge is essential.
Connected Coverage
Brazil’s urban landscape continues to shape its politics, economy, and daily life.
Sources: IBGE; Instituto Pereira Passos; Fundação João Pinheiro; SEBRAE; Banco Central do Brasil.
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