sphere, zone, range
圏（けん）、首都圏（しゅとけん）、圏外（けんがい）
sphere, Tokyo metro area, out of range
Appears in many compounds — memorize the key ones rather than the kanji in isolation. Has multiple meanings (sphere; zone; range). Context determines which applies — pay attention in reading passages.
From the JLP Quiz question bank — the word in the form it is actually tested in.
特にアジア圏からの旅行者が増加しており、地方の観光地にも訪問者が広がっている。
Answer: 3200万人以上
