CALOOCAN, a municipality (with administration centre and 31 barrios or districts) of the province of Rizal, Luzon, Philippine Islands, not far from Manila. Pop. (1918) 19,551, of whom 61 were whites. The principal products of this fertile region are rice, sugar and coconuts. In 1918 it had 18 manufacturing establishments with output valued at 156,00o pesos and 52 house hold industry establishments with output valued at 20,800 pesos. It has 12 public schools. Caloocan was one of the earliest com munities to rise against the Spaniards. The language is Tagalog.