Cannabis Indica October 12, 2016October 12, 2016 thcscience_admin Settlement in Tonga Koulo location in Lifuka Island Koulo is a settlement in the north-west area of Lifuka island, Tonga. The population is 171.[1] References[edit] ^ "PRELIMINARY RESULT TONGA POPULATION CENSUS 2021" (PDF). Tonga Statistics Department. 24 December 2021. p. 4. Retrieved 31 December 2021. 19°46′37″S 174°20′28″W / 19.777°S 174.341°W / -19.777; -174.341 (Kouloe)