Marcos, officially the Municipality of Marcos, is a 4th class municipality in the province of Ilocos Norte, Philippines. According to the 2020 cens…Marcos, officially the Municipality of Marcos, is a 4th class municipality in the province of Ilocos Norte, Philippines. According to the 2020 census, it has a population of 18,010. Formerly a part of Dingras, Ilocos Norte, Marcos was created on June 22, 1963, by Republic Act No. 3753, named in honor of Mariano Marcos, the father of former President Ferdinand Marcos. Marcos is 29 kilometres from Laoag, 510 kilometres from Manila, and 79 kilometres from Bangued.