Institutional population constitutes that part of the total population whose usual place of residence are collective or institutional living quarters (ILQs) such as hotels, motels, lodging houses, and dormitories; hospitals and nurses' homes; welfare institutions; corrective and penal institutions; convents, nunneries, seminaries, and boarding schools; military camps and stations; logging, mining, constructions/public works camps; oceangoing and interisland/coastal vessels; and refugee camps.

The household population of the Philippines reached 100.57 million persons in 2015. This is 8.48 million higher than the 92.10 million household population reported in 2010, and 23.96 million more than the 76.61 million household population posted in 2000.

Of the country's 238 legislative districts (LDs), the First LD of Caloocan City was the biggest in terms of population size, with 1.19 million persons, based on the results of the 2015 Census of Population (POPCEN 2015).