The highest city in the world, considering population size, is generally considered to be El Alto-La Paz metropolitan area in Bolivia.
This sprawling urban area houses over two million people at an average elevation of approximately 3,869 meters (12,694 feet) above sea level. This height places it significantly higher than many well-known mountainous regions and cities around the globe.
While there may be smaller settlements at higher altitudes, El Alto-La Paz stands out due to its substantial population and status as a major urban center.