Aside from the continents, which island in the world is the most populous? Java, an island in Southeast Asia, has the largest population. Its population is as high as 141,370,000 people. In terms of its area, the population density is 1,117 people per square kilometer.
The largest city of Java is Jakarta, the agglomeration of which is inhabited by over 30,000,000 people. It is also the capital of Indonesia and the second largest agglomeration in the world.