[1] [DFN[区]]は、何らかの形で区切られた範囲です。

[FIG(short list)[ [2] [[区]]
- [[行政区]]
- [[選挙区]]
- [[都市計画区域]]
- [[地域地区]]
- [[区 (符号化文字集合)]]
- [[区 (駅伝)]]
- [[区分け]]
- [[区分]]
- [[凶]]
- [[連区]]
]FIG]

[3] [CITE@ja[区制度の変遷(hmtマガジン)]], [TIME[2021-01-05T11:27:15.000Z]], [TIME[2021-02-20T08:36:02.462Z]] <https://uub.jp/hmt/hmt8.html>