Here's a breakdown:
* Yon: An archaic word meaning "that" or "those," often used to indicate something at a distance.
* Folks: A common word for "people."
Therefore, "yon folks" refers to people who are located some distance away from the speaker.
Example:
"Look at yon folks gathered by the river."
This sentence indicates that the speaker is observing a group of people who are some distance away, near a river.
Note: "Yon folks" is more common in older literature, regional dialects, and folk tales. In modern standard English, it's more common to say "those people."