Currently, about 20 Jews are estimated to be living in Indonesia.
Haaretz:

Indonesia’s last remaining synagogue has been destroyed, a Dutch news site reported last week. ………..

Situated in in eastern Java, the small synagogue was built in the 19th century by Dutch Jews when Indonesia was still a Dutch colony. It had white-painted bricks and a Star of David painted on the front door.
The first Jews arrived in Indonesia in the 17th century with the Dutch East India Company. During the 1930s and 1940s, the community grew due to new arrivals fleeing persecution in Europe.
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