A particular area or zone; often refers to an administrative or functional region (e.g., residential district, commercial district).
この地区は夜になると静かだ。
This district becomes quiet at night.
市は危険地区を再開発する予定だ。
The city plans to redevelop the hazardous district.
各地区でゴミの収集日が違うので注意してください。
Please note that garbage collection days differ by district.