The Metropolitan area of Puebla or Greater Puebla is the fourth largest agglomeration in Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 with a population of 2.109 million. This agglomeration includes 10 municipalities of the state of Puebla, and 13 municipalities of the state of Tlaxcala. It does not include the city of Tlaxcala

Tlaxcala, Tlaxcala

The city of Tlaxcala is the capital and chief center of population of the Mexican state of Tlaxcala. The city is located at in the south-central portion of the state. In the census of 2005 the city had a population of 15,777 inhabitants and was by far the smallest state capital in Mexico. It is...

.

According to the National Institute of Statistics, Geography, and Data Processing

National Institute of Statistics, Geography, and Data Processing

The National Institute of Statistic and Geography is an autonomous agency of the Mexican Government dedicated to coordinate the National System of Statistical and Geographical Information of the country...

 (INEGI), it consists of the following municipalities of the State of Puebla

Puebla

Puebla officially Estado Libre y Soberano de Puebla is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 217 municipalities and its capital city is Puebla....

:

• Amozoc
• Coronango
• Cuautlancingo
• Juan C. Bonilla
  Juan C. Bonilla (municipality)
  Juan C. Bonilla is a town and municipality in Puebla in south-eastern Mexico....
  
  
• Ocoyucan
  Ocoyucan (municipality)
  Ocoyucan is a town and municipality in Puebla in south-eastern Mexico.-References:...
  
  
• Puebla
  Puebla, Puebla
  The city and municipality of Puebla is the capital of the state of Puebla, and one of the five most important colonial cities in Mexico. Being a planned city, it is located to the east of Mexico City and west of Mexico's main port, Veracruz, on the main route between the two.The city was founded...
  
  
• San Andrés Cholula
• San Gregorio Atzompa
  San Gregorio Atzompa (municipality)
  San Gregorio Atzompa is a town and municipality in Puebla in south-eastern Mexico....
  
  
• San Miguel Xotla
  San Miguel Xoxtla (municipality)
  San Miguel Xoxtla is a town and municipality in Puebla in south-eastern Mexico.-References:...
  
  
• San Pedro Cholula

and the following municipalities of the State of Tlaxcala

Tlaxcala

Tlaxcala officially Estado Libre y Soberano de Tlaxcala is one of the 31 states which along with the Federal District comprise the 32 federative entities of Mexico. It is divided into 60 municipalities and its capital city is Tlaxcala....

:

• Mazatecochco de José María Morelos
  Mazatecochco de José María Morelos
  Mazatecochco de José María Morelos is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Acuamanala de Miguel Hidalgo
  Acuamanala de Miguel Hidalgo
  Acuamanala de Miguel Hidalgo is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• San Pablo del Monte
  San Pablo del Monte
  San Pablo del Monte is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Tenancingo
  Tenancingo
  Tenancingo may refer to:* Tenancingo, Mexico State* Tenancingo, Tlaxcala...
  
  
• Teolocholco
  Teolocholco (municipality)
  Teolocholco is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Tepeyanco
  Tepeyanco (municipality)
  Tepeyanco is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Papalotla de Xicohténcatl
  Papalotla de Xicohténcatl
  Papalotla de Xicohténcatl is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Xicohtzinco
  Xicohtzinco (municipality)
  Xicohtzinco is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Zacatelco
  Zacatelco (municipality)
  Zacatelco is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• San Juan Huactzinco
  San Juan Huactzinco (municipality)
  San Juan Huactzinco is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• San Lorenzo Axocomanitla
  San Lorenzo Axocomanitla (municipality)
  San Lorenzo Axocomanitla is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Santa Catarina Ayometla
  Santa Catarina Ayometla (municipality)
  Santa Catarina Ayometla is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  
• Santa Cruz Quilehtla
  Santa Cruz Quilehtla (municipality)
  Santa Cruz Quilehtla is a municipality in Tlaxcala in south-eastern Mexico.-References:...
  
  

It may be considered one of the oldest inhabited areas in the world, as it includes the city of Cholula, the oldest still-inhabited city in America.