Postal codes in Kaminoseki-cho, Kumage-gun, Yamaguchi
山口県熊毛郡上関町 — 5 postal codes. General code: 742-1400. Local government code 35341.
Address example
1-2-3 Iwaishima, Kaminoseki-cho, Kumage-gun, Yamaguchi 742-1401, Japan
〒742-1401 山口県熊毛郡上関町祝島1-2-3
Replace 1-2-3 with the chome-ban-go (block and lot) number, and add the building and room number before it.
| Postal code | Town / English address |
|---|---|
| 742-1400 | (any other address in this municipality) （下に掲載がない場合） Kaminoseki-cho, Kumage-gun, Yamaguchi 742-1400, Japan |
| 742-1401 | Iwaishima 祝島 Iwaishima, Kaminoseki-cho, Kumage-gun, Yamaguchi 742-1401, Japan |
| 742-1402 | Nagashima 長島 Nagashima, Kaminoseki-cho, Kumage-gun, Yamaguchi 742-1402, Japan |
| 742-1403 | Murotsu 室津 Murotsu, Kaminoseki-cho, Kumage-gun, Yamaguchi 742-1403, Japan |
| 742-1404 | Yashima 八島 Yashima, Kaminoseki-cho, Kumage-gun, Yamaguchi 742-1404, Japan |
Source: Japan Post postal code data (UTF-8 edition, updated Aug 31, 2026) and romanized edition (KEN_ALL_ROME, June 2025). Japan Post does not claim copyright on postal code data and allows free redistribution. Romaji follows Japan Post (long vowels are not marked). * = romanized by this site from the kana reading because the town is not yet in the romanized edition.