What Is the Latin American City Model Based On
If you've ever looked at a satellite image of Mexico City or São Paulo and wondered why the urban layout looks so different from a typical American suburb, you're already brushing up against the Latin American city model. This framework tries to explain how cities across Central and South America grew the way they did — and the answer starts centuries before any of us were born Small thing, real impact. Simple as that..
The model isn't just an academic exercise. It's a lens for understanding inequality, infrastructure, migration, and daily life in some of the world's largest and most dynamic cities. So let's break down what it's based on, how it works, and why it still matters today Took long enough..
What Is the Latin American City Model
The Latin American city model — sometimes called the Griffin-Ford model — is a theoretical framework that describes the spatial structure of cities in Latin America. Knox and Sallie A. Marston, building on earlier urban models like the Burgess concentric zone model and the Hoyt sector model. It was developed in the 1980s by Paul L. But it adapts those ideas specifically to the historical, cultural, and economic realities of the region.
The Colonial Foundation
Here's the thing most people miss. The Latin American city model is fundamentally based on colonial urban planning. When the Spanish and Portuguese empires established cities across the Americas starting in the 16th century, they didn't just throw up random buildings. They imposed a deliberate grid pattern centered on a plaza mayor — a central square that served as the civic, religious, and commercial heart of the settlement.
This plaza was the organizing principle. Even so, wealthy residences nearby. Markets and trade routes fanned out from there. The cathedral went on one side. So government buildings on another. That DNA — the idea of a central, dominant core — still shapes how these cities look and function centuries later But it adds up..
The Central Business District and the Spine
Unlike North American cities, which often have a single dominant CBD, Latin American cities tend to have a dual CBD structure. There's the historic center, rooted in the colonial plaza, and then a modern commercial spine — often called the corredor — that extends outward along major transportation routes.
Think of it as two economic engines running in parallel. The historic center holds government buildings, older businesses, and cultural landmarks. The modern spine attracts newer corporate offices, banks, and retail. In cities like Lima or Bogotá, you can literally see this divide on a map — two dense corridors of activity with different characters and different levels of investment No workaround needed..
Concentric Zones and Sectors
The model also borrows from the concentric zone idea, but with a twist. Instead of neat rings, Latin American cities tend to develop in sectors and wedges radiating outward from the center. Wealthier neighborhoods cluster along certain corridors — often those with better access to roads, transit, and views. Lower-income areas fill in the gaps.
And then there's the periphery. This is where the model gets really important for understanding real-world conditions.
The Peripheral Slum and the Informal City
One of the defining features of the Latin American city model is the zone of peripheral squatter settlements — the informal neighborhoods that ring almost every major city in the region. These areas, often called favelas in Brazil, barrios in Mexico, or villas in Argentina, are built by residents themselves, often without formal land ownership, sanitation, or city services Simple, but easy to overlook..
The model explains how these settlements grew so rapidly. Rural-to-urban migration, driven by poverty and lack of opportunity in the countryside, pushed millions of people to the edges of cities throughout the 20th century. The city expanded outward faster than infrastructure could keep up. The result is a massive ring of informal housing that now houses a huge share of the urban population.
Why It Matters
Understanding Inequality in Urban Form
About the La —tin American city model isn't just about geography. Where you live in a city like Quito or Santiago tells you a lot about your access to clean water, reliable electricity, public transit, and quality schools. It's a map of social inequality. The model makes that visible Turns out it matters..
Wealth concentrates near the center and along certain corridors. Poverty radiates outward and inward — inward toward the deteriorating edges of the historic core, outward toward the informal periphery. That spatial inequality has real consequences for mobility, health, and economic opportunity Easy to understand, harder to ignore..
Migration and Urban Growth
Between 1950 and 2020, the urban population of Latin America grew from roughly 40 percent to over 80 percent. Now, that's one of the fastest urbanization rates in human history. The Latin American city model helps explain how cities absorbed that growth — and why so much of it happened on the margins, in neighborhoods the formal city never planned for It's one of those things that adds up. That alone is useful..
Policy and Planning Implications
For urban planners and governments, the model is a diagnostic tool. Day to day, if you understand that a city's structure is based on colonial patterns and rapid informal growth, you can start asking better questions. Where should transit go? How do you upgrade informal settlements without displacing residents? How do you connect the periphery to the economic core?
How the Model Works in Practice
Mexico City as a Case Study
Mexico City is one of the clearest examples. The Centro Histórico sits at the original Aztec capital of Tenochtitlan, rebuilt by the Spanish around the plaza mayor. From there, the city expanded outward in concentric waves. The wealthy neighborhoods of Polanco and Lomas de Chapultepec sit to the west and north. The sprawling, lower-income periphery stretches east and south into the State of Mexico, where informal settlements and industrial zones dominate Worth keeping that in mind..
Counterintuitive, but true.
The modern Paseo de la Reforma corridor acts as a spine, connecting the historic center to newer business districts like Santa Fe. You can see the dual CBD structure playing out in real time.
São Paulo's Radial Pattern
São Paulo takes the sector idea even further. The city grew along multiple radial axes, with wealthy areas like Jardins and Morumbi positioned along certain corridors and working-class neighborhoods like Heliópolis and Cidade Tiradentes filling the spaces in between. The ** Avenida Paulista** corridor functions as a modern spine, much like the model predicts Nothing fancy..
The Role of Geography
Physical geography also shapes how the model plays out. Coastal cities like Lima and Buenos Aires have more room to sprawl. Cities built in valleys, like Mexico City and Bogotá, face natural constraints on expansion. Mountains, rivers, and coastlines all interact with the colonial grid to create unique urban patterns that the model accounts for but doesn't fully predict Less friction, more output..
Worth pausing on this one.
Common Mistakes People Make About This Model
Confusing It with the Burgess Model
The biggest mistake is treating the Latin American city model as just a copy
The biggest mistake is treating the Latin American city model as just a copy of the classic Burgess or Concentric Zone models. Day to day, ” Latin American metropolises, by contrast, exhibit a polycentric structure, stark socio‑economic contrasts, and a historic layering of colonial, post‑colonial, and modern influences that the Burgess model simply cannot capture. While those European‑derived frameworks were derived from 19th‑century American and British cities, they assume a relatively homogeneous population, a single dominant central business district (CBD), and a linear progression from “zone of better housing” to “zone of poorer housing.Recognizing this divergence prevents planners from imposing inappropriate zoning regulations or transportation schemes that ignore the lived realities of peripheral neighborhoods.
Not the most exciting part, but easily the most useful.
Other Common Misinterpretations
| Misinterpretation | Why It Misleads | Correct Perspective |
|---|---|---|
| Seeing informal settlements as “temporary” | Informal areas often evolve into permanent, self‑organized communities with their own social networks and economic activities. Still, g. , Reforma in Mexico City, Paulista in São Paulo) that serve distinct functional zones. | Treat informal settlements as integral parts of the urban fabric that require inclusive upgrading strategies rather than short‑term clearance projects. On the flip side, |
| Equating density with poverty | High density can coexist with wealth (e. | Map the full network of primary and secondary axes, acknowledging how each corridor links specific economic sectors to particular neighborhoods. , Polanco’s high‑rise apartments) and low income can be dispersed across low‑density peripheries. |
| Neglecting the role of geography | Physical constraints (mountains, rivers, coastlines) shape where development can occur, yet the model sometimes treats space as a blank slate. Worth adding: g. And | |
| Assuming a single radial spine | Many Latin American cities have multiple, competing corridors (e. | Use density as one of several indicators — alongside income, land tenure, and service access — to assess quality of life. |
Policy Takeaways
- Polycentric Mobility Planning – Invest in multimodal transit that connects secondary corridors (e.g., local bus rapid transit routes, bike lanes) to the main spines, reducing reliance on a single CBD and easing congestion.
- Incremental Formalization – Rather than wholesale demolition, adopt phased regularization that upgrades infrastructure, secures land tenure, and preserves community cohesion in informal settlements.
- Equitable Land‑Use Zoning – Implement flexible zoning that allows mixed‑use development in peripheral zones, enabling residents to access jobs, services, and cultural amenities without long commutes.
- Participatory Governance – Involve residents of low‑income sectors in planning discussions; their knowledge of local dynamics is essential for designs that are both functional and socially acceptable.
Conclusion
Here's the thing about the Latin American city model offers a nuanced lens for understanding how colonial legacies, rapid informal growth, and distinctive geographic conditions combine to shape urban form. By moving beyond the simplifications of the Burgess model — recognizing polycentrism, the permanence of informal neighborhoods, and the influence of physical constraints — planners and policymakers can craft strategies that are more equitable, sustainable, and responsive to the lived realities of millions of urban dwellers. In doing so, they not only address the spatial challenges of today’s metropolises but also lay the groundwork for more inclusive economic opportunities that can lift the peripheral communities out of chronic marginality Easy to understand, harder to ignore..
