Takeo is a city located in Saga Prefecture on the island of Kyushu, Japan. In 2011, the city government was the first in Japan to switch to using Facebook for its website. As of October 1, 2016, the city has an estimated population of 48,845 and a population density of 257 persons per km². The total area is 195.44 km².

Saga Prefecture is a prefecture of Japan located on the island of Kyushu. Saga Prefecture has a population of 809,248 and has a geographic area of 2,440 km2. Saga Prefecture borders Fukuoka Prefecture to the northeast and Nagasaki Prefecture to the southwest.