Mexico is one of the countries along the Ring of Fire, a belt of active volcanoes and earthquake epicenters bordering the Pacific Ocean;Mexico City (Population 21,671,908) Cairo (Population ,484,965) Dhaka (Population ,2,552) Mumbai (Population ,185,064) Beijing (Population ,035,455) Osaka (Population 19,222,665) It is perhaps unsurprising that the majority of the most populous cities in the world are in the two most populated countries in the world, China and Mexico City is also one of the 31 state of Mexico that Mexico is state is the country Where is Mexico City Mexico City as well as both biggest city and famous city in Mexico country Its have lived 212 billion people there and also one of the most crowded in the world Approximately 212 billion people that they lived city center Miguel Mexico City Tackles The Challenges Of Population Commuting And Air Quality Geo Mexico The Geography Of Mexico World map showing mexico city