"near the border of Jakarta" should also be acceptable
Should be "Who live on the border of Jakarta"
Also "on the border of" "at the border" or even "within the border" could work as well.
The prefix pe- and the affix -an are used to form nouns
Perbatasan means border
The root is batas (verb) which means to limit
Other words with this root: keterbatasan (limitations), batasan (boundary)