comma

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. Is the place where you live a nice place?
  2. Is the place where you live, a nice place?
  3. Is the place, where you live, a nice place?
    How can I use comma in this sentence?
    All are OK or not?
    Please guide me.
2

#1 is OK. “where you live” defines which place is meant.

In #3, “where you live” is inserted in a parenthetical (non-defining) way. Though this punctuation structure is possible, it seems rather unlikely in this particular case. In this case you would almost always intend “where you live” to define “place”.

#2 is not correct.