In literary criticism, narrators are described by the grammatical person in which they refer to themselves, their relationships to the main characters in the story, and their relationship to the reader, inter alia. In the case of William Faulkner's short story, "A Rose for Emily", this can be determined by looking at a typical paragraph, such as the following one:
We did not say she was crazy then. We believed she had to do that. We remembered all the young men her father had driven away, and we knew that with nothing left, she would have to cling to that which had robbed her, as people will.
The narrator refers to himself throughout by the first person plural pronoun "we", and seems to take the point of view of a typical man (or the collective of the men) of the town. The narrator is not omniscient, but is able to shift points of view and is familiar with town gossip.