Metro Manila has a population of  according to the 2020 national census. Its total urban area, composed of the urban agglomeration which refers to the continuous urban expansion of Metro Manila into the provinces of Bulacan, Cavite, Laguna and Batangas has an estimated population of  as of 2015. It is the second most populous (after Calabarzon) and most densely populated region in the Philippines, the 7th most populous metropolitan area in Asia, and the 3rd most populous urban area in the world.