Burgess's concentric zone model (1925) is an urban land-use model showing a city as a series of rings expanding outward from the central business district, with each ring holding a different land use and socioeconomic group, from the zone of transition near the core to commuter suburbs on the edge.
Burgess's concentric zone model is sociologist Ernest W. Burgess's 1925 attempt to explain how cities organize themselves. He based it on Chicago and proposed that cities grow outward from the center in five rings: (1) the central business district (CBD), (2) the zone of transition with factories and low-income housing, (3) working-class homes, (4) middle-class residential areas, and (5) the commuter zone of wealthier suburbs. The big idea is that land use changes predictably as you move away from downtown, and that new arrivals to the city tend to start near the center and move outward as their incomes rise.
The logic underneath the rings is land value. Land near the CBD is the most accessible and the most expensive, so only businesses can afford it. Housing gets cheaper-per-acre and lower-density as you move out, which is why families with money end up on the edge with big lots and a commute. That makes the concentric zone model essentially a real-world picture of what bid-rent theory predicts on a graph. It describes early 20th-century American industrial cities well, but it works less well for modern decentralized cities or cities outside North America, which is exactly the kind of limitation the AP exam likes you to point out.
This model lives in Unit 6 (Cities and Urban Land-Use Patterns and Processes), where it's one of the classic urban models you're expected to know alongside the sector and multiple-nuclei models. It supports the urban concepts in topic 6.4 (AP Human Geography 6.4.A) and gives you the baseline for understanding suburbanization and decentralization in topic 6.2 (AP Human Geography 6.2.A). When EK PSO-6.A.4 talks about sprawl, edge cities, and exurbs breaking the old single-center pattern, the pattern being broken is Burgess's. The model also doubles as a Unit 1 skill check. Its rings are formal regions defined by a unifying characteristic (AP Human Geography 1.7.A), and evaluating where the model fits real cities and where it fails is the kind of model-versus-reality thinking AP Human Geography rewards constantly.
Keep studying AP Human Geography Unit 1
Bid-Rent Theory (Unit 6)
Bid-rent theory is the engine inside Burgess's model. It says land value drops as distance from the CBD increases, so commercial users outbid everyone for the center and residential users settle farther out. Burgess's rings are what that price gradient looks like when you draw it as a map of an actual city.
Central Business District and Zone of Transition (Unit 6)
The CBD is ring one and the zone of transition is ring two, the area of older factories and cheap housing where new migrants historically settled. Exam questions love the zone of transition because it explains both early 20th-century immigrant neighborhoods and later gentrification debates.
Suburbanization and Urban Sprawl (Unit 6)
Burgess assumed everything orbits one downtown. Suburbanization, sprawl, and edge cities (EK PSO-6.A.4) broke that assumption by creating new commercial centers on the urban fringe. Knowing the model helps you explain exactly what changed in cities after cars and highways.
Regional Analysis (Unit 1)
Each Burgess ring is a formal region, an area defined by a shared characteristic like land use or income (EK SPS-1.B.2). And just like the CED says, those regional boundaries are transitional and overlapping, not the crisp circles the diagram suggests. Real cities blur at the edges of every ring.
Multiple-choice questions usually do one of three things with this model. They show you the ring diagram and ask you to identify a zone, they ask which city type the model best describes (the answer is early 20th-century North American industrial cities like Chicago), or they ask why the model fails to describe a modern or non-Western city. No released FRQ has used the term verbatim in recent years, but urban models are a recurring FRQ theme in Unit 6, and a strong answer compares Burgess to the sector or multiple-nuclei model or explains how processes like suburbanization and edge-city growth contradict the single-center assumption. The move that earns points is not reciting the five rings. It's explaining the logic (accessibility and land cost) and evaluating where the model holds up.
Both models try to explain land use in the same kind of industrial city, but they disagree on the shape of growth. Burgess says cities grow in rings, so distance from the CBD determines land use. Hoyt's sector model (1939) says cities grow in wedges that follow transportation corridors, so a wealthy sector or an industrial sector can run from the center all the way to the edge along a rail line or major road. Quick test for MCQs: if the diagram is circles, it's Burgess; if it's pie slices radiating outward, it's Hoyt.
Burgess's concentric zone model (1925) describes a city as five rings expanding outward from the CBD: the CBD, the zone of transition, working-class housing, middle-class housing, and the commuter zone.
The model is built on the same logic as bid-rent theory, where land near the center is expensive so businesses claim it, and housing gets cheaper per acre and lower-density toward the edge.
The model fits early 20th-century industrial cities like Chicago, but suburbanization, edge cities, and sprawl broke its single-center assumption, which is a standard critique the exam expects you to make.
Each ring is a formal region defined by a unifying land-use characteristic, and like all regional boundaries, the ring edges are transitional and overlapping in real cities.
On the exam, compare Burgess (rings based on distance) with Hoyt's sector model (wedges based on transportation corridors) and the multiple-nuclei model (several separate centers).
It's a 1925 urban land-use model by Ernest W. Burgess showing a city as five rings growing outward from the central business district, with each ring containing a different land use and income group. Burgess based it on Chicago, and it's one of the three classic urban models in Unit 6.
Mostly no. The model assumes one downtown that everything orbits, but cars, highways, suburbanization, and edge cities decentralized commercial activity after the mid-20th century. It still describes the underlying land-value gradient, which is why you learn it, but the AP exam often asks you to explain its limitations.
Burgess (1925) organizes the city in rings, so land use depends on distance from the CBD. Hoyt (1939) organizes it in wedges that follow transportation routes like rail lines, so a single land use can stretch from the center to the edge. Circles mean Burgess, pie slices mean Hoyt.
From the center out: the central business district, the zone of transition (factories and low-income housing), working-class residential, middle-class residential, and the commuter zone of wealthier suburbs. Income generally rises as you move outward.
Bid-rent theory says land value falls with distance from the CBD, so the users who profit most from accessibility outbid everyone for central land. Burgess's rings are basically that theory drawn as a map: businesses in the core, cheap dense housing nearby, and spacious wealthy housing at the edge.