Allacapan, officially the Municipality of Allacapan, is a 3rd class municipality in the province of Cagayan, Philippines. According to th…Allacapan, officially the Municipality of Allacapan, is a 3rd class municipality in the province of Cagayan, Philippines. According to the 2020 census, it has a population of 35,234 people. Allacapan is situated in the north-western periphery of Cagayan, bordering Apayao. It is the headquarters of GV Florida Transport. It is 93 kilometres from Tuguegarao and 574 kilometres from Manila.