Mexico City megalopolis
The Mexico City megalopolis, also known as the Megalopolis of Central Mexico, is a megalopolis containing Greater Mexico City and surrounding metropolitan areas.
In 1996, the Programa General de Desarollo Urbano del Distrito Federal first proposed the concept of a "Megalopolis of Central Mexico", which was later expanded by PROAIRE, a metropolitan commission on the environment.
The Megalopolis of Central Mexico includes 10 metropolitan areas of Mexico, as defined by the National Population Council : Valley of Mexico, Puebla, Toluca, Queretaro, Cuernavaca, Pachuca, Tlaxcala-Apizaco, Cuautla, Tulancingo, Tula and Tianguistenco. Some of these areas form complex subregional rings themselves.
The megalopolis spreads over, and consists of 185 subdivisions in 6 federative entities: 169 municipalities, 81 in the State of Mexico, 39 in Tlaxcala, 19 in Puebla, 16 in Hidalgo, and 14 in Morelos; plus the 16 boroughs of Mexico City. Its population as of 2020 is 30.8 million people, about 25% of the country's total.
Since 2019 the megalopolis includes the state of Querétaro.
The Querétaro metropolitan area is also part of the fast-growing macroregion of Bajío.
Component metropolitan areas
| Rank | Metropolitan Area | Federative Entity | Munic. | Area | 2020 Census | 2010 Census | Change |
| 1 | Valley of Mexico | Mexico City, State of Mexico, Hidalgo | 76 | 7,866.1 | - | - | |
| 4 | Puebla | Puebla, Tlaxcala | 39 | 2,392.4 | - | - | |
| 5 | Toluca | State of Mexico | 16 | 2,410.5 | - | - | |
| 8 | Querétaro | Querétaro | 5 | 2,427.3 | - | - | |
| 16 | Cuernavaca | Morelos | 8 | 1,189.9 | - | - | |
| 32 | Pachuca | Hidalgo | 7 | 1,184.8 | - | - | |
| 33 | Tlaxcala-Apizaco | Tlaxcala | 19 | 708.1 | - | - | |
| 38 | Cuautla | Morelos | 6 | 979.6 | - | - | |
| 56 | Tulancingo | Hidalgo | 3 | 673.1 | - | - | |
| 59 | Tula | Hidalgo | 5 | 1,845.8 | - | - | |
| 67 | Tianguistenco | State of Mexico | 6 | 304.0 | - | - | |
| Mexico City megalopolis | 185 | 19,554.3 | - | - |