Postal codes in Muroran-shi, Hokkaido
北海道室蘭市 — 53 postal codes. General code: 050-0000. Local government code 01205.
Address example
1-2-3 Ishikawacho, Muroran-shi, Hokkaido 050-0051, Japan
〒050-0051 北海道室蘭市石川町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 |
|---|---|
| 050-0000 | (any other address in this municipality) （下に掲載がない場合） Muroran-shi, Hokkaido 050-0000, Japan |
| 050-0051 | Ishikawacho 石川町 Ishikawacho, Muroran-shi, Hokkaido 050-0051, Japan |
| 051-0023 | Iriecho 入江町 Iriecho, Muroran-shi, Hokkaido 051-0023, Japan |
| 051-0035 | Etomocho 絵鞆町 Etomocho, Muroran-shi, Hokkaido 051-0035, Japan |
| 050-0086 | Osawacho 大沢町 Osawacho, Muroran-shi, Hokkaido 050-0086, Japan |
| 051-0033 | Ohashinaicho 小橋内町 Ohashinaicho, Muroran-shi, Hokkaido 051-0033, Japan |
| 051-0022 | Kaigancho 海岸町 Kaigancho, Muroran-shi, Hokkaido 051-0022, Japan |
| 050-0052 | Kagawacho 香川町 Kagawacho, Muroran-shi, Hokkaido 050-0052, Japan |
| 050-0064 | Kashiwagicho 柏木町 Kashiwagicho, Muroran-shi, Hokkaido 050-0064, Japan |
| 050-0053 | Kamishirocho 神代町 Kamishirocho, Muroran-shi, Hokkaido 050-0053, Japan |
| 051-0032 | Konancho 港南町 Konancho, Muroran-shi, Hokkaido 051-0032, Japan |
| 050-0063 | Kohokucho 港北町 Kohokucho, Muroran-shi, Hokkaido 050-0063, Japan |
| 051-0002 | Gozensuicho 御前水町 Gozensuicho, Muroran-shi, Hokkaido 051-0002, Japan |
| 050-0082 | Kotobukicho 寿町 Kotobukicho, Muroran-shi, Hokkaido 050-0082, Japan |
| 051-0016 | Saiwaicho 幸町 Saiwaicho, Muroran-shi, Hokkaido 051-0016, Japan |
| 051-0014 | Sakaecho 栄町 Sakaecho, Muroran-shi, Hokkaido 051-0014, Japan |
| 050-0055 | Sakimoricho 崎守町 Sakimoricho, Muroran-shi, Hokkaido 050-0055, Japan |
| 051-0027 | Sawacho 沢町 Sawacho, Muroran-shi, Hokkaido 051-0027, Japan |
| 051-0026 | Shimizucho 清水町 Shimizucho, Muroran-shi, Hokkaido 051-0026, Japan |
| 051-0036 | Shukuzucho 祝津町 Shukuzucho, Muroran-shi, Hokkaido 051-0036, Japan |
| 051-0005 | Shintomicho 新富町 Shintomicho, Muroran-shi, Hokkaido 051-0005, Japan |
| 050-0067 | Jinyamachi 陣屋町 Jinyamachi, Muroran-shi, Hokkaido 050-0067, Japan |
| 050-0072 | Takasagocho 高砂町 Takasagocho, Muroran-shi, Hokkaido 050-0072, Japan |
| 050-0062 | Takahiracho 高平町 Takahiracho, Muroran-shi, Hokkaido 050-0062, Japan |
| 051-0006 | Chatsucho 茶津町 Chatsucho, Muroran-shi, Hokkaido 051-0006, Japan |
| 051-0011 | Chuocho 中央町 Chuocho, Muroran-shi, Hokkaido 051-0011, Japan |
| 050-0076 | Chiribetsucho 知利別町 Chiribetsucho, Muroran-shi, Hokkaido 050-0076, Japan |
| 051-0031 | Tsukijicho 築地町 Tsukijicho, Muroran-shi, Hokkaido 051-0031, Japan |
| 050-0077 | Tenjincho 天神町 Tenjincho, Muroran-shi, Hokkaido 050-0077, Japan |
| 051-0025 | Tokiwacho 常盤町 Tokiwacho, Muroran-shi, Hokkaido 051-0025, Japan |
| 050-0074 | Nakajimacho 中島町 Nakajimacho, Muroran-shi, Hokkaido 050-0074, Japan |
| 050-0075 | Nakajimahoncho 中島本町 Nakajimahoncho, Muroran-shi, Hokkaido 050-0075, Japan |
| 050-0087 | Nakamachi 仲町 Nakamachi, Muroran-shi, Hokkaido 050-0087, Japan |
| 051-0028 | Nishikojicho 西小路町 Nishikojicho, Muroran-shi, Hokkaido 051-0028, Japan |
| 050-0054 | Hakuchodai 白鳥台 Hakuchodai, Muroran-shi, Hokkaido 050-0054, Japan |
| 050-0061 | Hatchodaira 八丁平 Hatchodaira, Muroran-shi, Hokkaido 050-0061, Japan |
| 050-0083 | Higashimachi 東町 Higashimachi, Muroran-shi, Hokkaido 050-0083, Japan |
| 050-0081 | Hinodecho 日の出町 Hinodecho, Muroran-shi, Hokkaido 050-0081, Japan |
| 051-0013 | Funamicho 舟見町 Funamicho, Muroran-shi, Hokkaido 051-0013, Japan |
| 051-0003 | Bokoi Minamimachi 母恋南町 Bokoi Minamimachi, Muroran-shi, Hokkaido 051-0003, Japan |
| 051-0004 | Bokoi Kitamachi 母恋北町 Bokoi Kitamachi, Muroran-shi, Hokkaido 051-0004, Japan |
| 050-0066 | Horomoecho 幌萌町 Horomoecho, Muroran-shi, Hokkaido 050-0066, Japan |
| 051-0015 | Honcho 本町 Honcho, Muroran-shi, Hokkaido 051-0015, Japan |
| 051-0024 | Makunishicho 幕西町 Makunishicho, Muroran-shi, Hokkaido 051-0024, Japan |
| 051-0034 | Masuichicho 増市町 Masuichicho, Muroran-shi, Hokkaido 051-0034, Japan |
| 051-0001 | Misakicho 御崎町 Misakicho, Muroran-shi, Hokkaido 051-0001, Japan |
| 050-0071 | Mizumotocho 水元町 Mizumotocho, Muroran-shi, Hokkaido 050-0071, Japan |
| 051-0021 | Midoricho 緑町 Midoricho, Muroran-shi, Hokkaido 051-0021, Japan |
| 050-0073 | Miyanomoricho 宮の森町 Miyanomoricho, Muroran-shi, Hokkaido 050-0073, Japan |
| 050-0084 | Miyukicho みゆき町 Miyukicho, Muroran-shi, Hokkaido 050-0084, Japan |
| 050-0065 | Motowanishicho 本輪西町 Motowanishicho, Muroran-shi, Hokkaido 050-0065, Japan |
| 051-0012 | Yamatecho 山手町 Yamatecho, Muroran-shi, Hokkaido 051-0012, Japan |
| 050-0085 | Wanishicho 輪西町 Wanishicho, Muroran-shi, Hokkaido 050-0085, 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.