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Household Population Age and Sex in Ilocos Region (2020 CPH)
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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…
Region I's population surpassed five million mark
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Population increased at the rate of 1.09 percent annually

Region I Population hits 5 Million
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The total population of Region I as of August 1, 2015 was 5,025,128, based on the 2015 Census of Population (POP