 11% of the population is under 6 years of age.The name "Aroor" traces its origins to the phrase "Arayarude Oor", which means the place of Hindu fishermen, mainly the sub class Vaalarayar or Vaala, derived the name from their unique fishing equipment "Dragon Tailed" (Vaal in Malayalam) Net used in their legal fishery.It was later shortened as "Arayaroor" and subsequently to the present version.