Ogi is a city situated in the central region of Saga Prefecture on the island of Kyushu, Japan. It covers a total land area of approximately 95.81 square kilometers (36.99 square miles).
As of May 31, 2024, the city had an estimated population of 44,120 residents living in 17,548 households. The population density of the area is recorded at 240 persons per square kilometer.