What is the proper noun of town?

There isn't a single proper noun for "town". A proper noun is a specific name for a person, place, or thing.

To find the proper noun for a town, you need the name of the specific town. For example:

* Town: _general term_

* Proper Noun: New York City, London, Tokyo

Let me know if you have a specific town in mind, and I can tell you the proper noun!