Answer

There isn’t one single official count, but a recent 2026 Jain-temple directory lists Mumbai with 601 Jain temples/derasars. ( poidata.io)

Explanation

The number can change depending on how you count: some lists include only main derasars, while others also include trusts, upashrayas, and smaller shrine units. An older Mumbai report also said the civic body had notices out to more than 1,000 temple trusts in the city, many of them Jain temples, which shows how widely Jain religious places are spread across Mumbai. ( mumbaimirror.indiatimes.com)

Takeaway

So the short answer is: Mumbai has roughly 600+ listed Jain derasars, and the total can be higher depending on the definition used. ( poidata.io)