Based on the 2020 Census of Population and Housing (2020 CPH), the Ilocos Region listed 1,366,643 housing units. Of the figure, 90.11 percent or 1,231,448 housing units were occupied as of 01 May 2020.

The llocos Region household population was dominated by Roman Catholics with 4,338,887 or 82.0 percent of the total 5,292,297 household population of the llocos Region in 2020.

Based on the results of the 2020 Census of Population and Housing (CPH), a total of 5,248,747 persons in the Ilocos Region had their birth registered with the Local Civil Registry Offices (LCROs). This translates to 99.2 percent of the 5,292,247…

Based on the results of the 2020 Census of Population and Housing, Ilocos Region had a household population of 5,292,297, comprising 99.8 percent of the total population of the region. Of this total, 2.68 million (50.7 percent) were male, and 2.61…

Population increased at the rate of 1.09 percent annually