Shimabara is a city located in the Nagasaki Prefecture on the island of Kyushu, Japan. It covers a total land area of 170.13 square kilometers (approximately 65.69 square miles).
As of June 30, 2024, the city had an estimated population of 42,181 residents living in 19,917 households. The recorded population density for the area is 510 people per square kilometer.