A residential district — an area where houses and residential buildings are concentrated; used mainly for living.
静かな住宅地に引っ越したので、夜はとても静かだ。
Since I moved to a quiet residential area, nights are very peaceful.
その住宅地には公園や小学校が近くにある。
There is a park and an elementary school near that residential area.
住宅地の造成が進み、新しい町ができた。
The development of the residential area progressed, and a new town was formed.