This is the 16567th most frequent Turkish word.
yerleşimdeki
"Yerleşimdeki" means "in the settlement" or "within the settlement" in English.
Here, 'yerleşimdeki' functions as an adjective, describing the location ('in the settlement') of the stores.
Yerleşimdeki mağazalar sabah erken saatlerde açılıyor.
The stores in the settlement open early in the morning.
In this case, 'yerleşimdeki' is used to describe the streets specified by their location ('in the settlement').
Yerleşimdeki sokaklar oldukça sakindi.
The streets in the settlement were quite calm.
The usage of 'yerleşimdeki' here emphasizes the schools located within the settlement.