Answer

In Jain Dharma, the beings in the Dev Lok are not counted like human populations. Their numbers are generally described as innumerable.

If you mean the 4 classes of devas, they are:

• Bhavanvasi devas — innumerable
• Vyantara devas — innumerable
• Jyotishka devas — innumerable
• Vaimanik devas — innumerable

Explanation

Jain scriptures describe Dev Lok as a realm of celestial beings, but they do not give a simple fixed number like “so many people” in each realm.

These beings are grouped by type, not by a limited count. So the correct traditional understanding is:

• Their categories are known
• Their exact population is not given as a human-style number
• They are considered very vast / countless

Spiritual Understanding

Jain teaching uses Dev Lok to show that even heavenly birth is still part of samsara. A deva life is pleasant and long, but it is not liberation.

So the important lesson is:

• Birth in Dev Lok is temporary
• True goal in Jain Dharma is moksha
• Liberation comes through right faith, right knowledge, and right conduct

Takeaway

So, the short answer is: the number of beings in each Dev Lok realm is not fixed; they are described as innumerable.