The most common and most likely answer to this crossword clue is the 4 letter word PUBS
I've seen this crossword clue in The Times
P
U
B
S
Buddy explains!

The straight part
We know that "the locals" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case the locals = pubs.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PUBS mean?
PUBS noun- A public house where beverages, primarily alcoholic, may be bought and consumed, also providing food and sometimes entertainment such as live music or television.
- A public server.
- To go to one or more public houses.
- To publish
- The act of publishing printed or other matter.
- An issue of printed or other matter, offered for sale or distribution.
- The communication of information to the general public etc.