Iwakuni (岩国市) is a city located in Yamaguchi Prefecture, Japan, known for its historical and cultural significance. It is famous for the iconic Kintai Bridge, a five-arched wooden bridge that spans the Nishiki River and dates back to 1673. The city also hosts the Iwakuni Castle, perched on a hill overlooking the bridge. Additionally, Iwakuni is home to the U.S. Marine Corps Air Station Iwakuni, which plays a crucial role in the local economy and community. The city blends its rich history with modern amenities, making it a unique destination in the region.

💻 Iwakuni City Official Government Website

Districts and Postal Codes in Iwakuni

Click on the district name for the complete Japanese address, the complete English address, how to write a Japanese address, the postal code, the map location, and more.

District Postal Code
Ainotani 〒740-0304
Asahimachi 〒740-0024
Ajina 〒741-0094
Atagomachi 〒740-0037
Iidamachi 〒740-0003
Ifusa 〒740-0324
Imadzumachi 〒740-0017
Irino 〒740-0321
Iwakuni 〒741-0062
Ueda 〒740-0317
Ushino Yamachi 〒741-0071
Ōgimachi 〒740-0042
Ōtani 〒741-0084
Ōyama 〒740-0323
Oze 〒741-0091
Odzumachi 〒740-0032
Katsuramachi 〒740-0013
Kanōgi 〒741-0075
Kawaguchimachi 〒740-0015
Kawashimomachi 〒740-0023
Kawaradani 〒740-0311
Kawanishi 〒741-0082
Kuina 〒740-0303
Kugamachi 〒742-0332
Kusunokimachi 〒740-0028
Kurumamachi 〒740-0026
Kuroisomachi 〒740-0041
Shimo 〒740-0302
Shūchi 〒740-0312
Shūtōmachi Akemidani 〒742-0411
Shūtōmachi Osogoe 〒742-0422
Shūtōmachi Kamikubara 〒742-0413
Shūtōmachi Kamisudōri 〒742-0426
Shūtōmachi Kawakami 〒742-0412
Shūtōmachi Sasugawa 〒742-0424
Shūtōmachi Sanzegawa 〒742-0421
Shūtōmachi Shimokubara 〒742-0417
Shūtōmachi Shimosudōri 〒742-0423
Shūtōmachi Sō 〒742-0301
Shūtōmachi Tajiri 〒742-0414
Shūtōmachi Nakayama 〒742-0415
Shūtōmachi Nishinagano 〒742-0425
Shūtōmachi Hiyoji 〒742-0427
Shūtōmachi Yōda 〒742-0416
Shōzokumachi 〒740-0001
Shōwamachi 〒740-0004
Shinminatomachi 〒740-0002
Sunayamamachi 〒740-0019
Sumi 〒740-0327
Sekido 〒741-0063
Takeyasu 〒740-0325
Tada 〒741-0092
Tateishimachi 〒740-0011
Tawara 〒741-0093
Chikanobu 〒740-0315
Tsudzu 〒740-0044
Terayama 〒740-0314
Tennō 〒740-0306
Nakadzumachi 〒740-0027
Nagano 〒740-0045
Nadamachi 〒740-0033
Nishikimachi Usa 〒740-0901
Nishikimachi Usagō 〒740-0904
Nishikimachi Ōno 〒740-0721
Nishikimachi Ōhara 〒740-0903
Nishikimachi Sugawa 〒740-0811
Nishikimachi Nakanose 〒740-0722
Nishikimachi Notani 〒740-0725
Nishikimachi Hirose 〒740-0724
Nishikimachi Fukagawa 〒740-0812
Nishikimachi Funotani 〒740-0723
Nishimi 〒741-0061
Hashirajima 〒740-0051
Hashirano 〒741-0073
Hataki 〒740-0322
Habu 〒740-0326
Hinodemachi 〒740-0014
Hirata 〒741-0072
Fujūmachi 〒740-0036
Futashika 〒740-0305
Hōki 〒740-0313
Hōdzumachi 〒740-0043
Hongōmachi Udzuka 〒740-0604
Hongōmachi Nishikurozawa 〒740-0605
Hongōmachi Hano 〒740-0603
Hongōmachi Hongō 〒740-0602
Hongōmachi Hondani 〒740-0601
Marifumachi 〒740-0018
Mikasamachi 〒740-0016
Mikawamachi Kogawa 〒740-0501
Mikawamachi Shimegami 〒740-0502
Mikawamachi Soedani 〒740-0503
Mikawamachi Naguwa 〒740-0504
Mikawamachi Nekasa 〒740-0505
Mishō 〒741-0083
Misumimachi 〒740-0025
Midoromachi 〒740-0035
Minamiiwa Kunimachi 〒740-0034
Miwamachi Aka 〒740-1241
Miwamachi Akigake 〒740-1201
Miwamachi Ikimi 〒740-1231
Miwamachi Ōnegawa 〒740-1217
Miwamachi Kamagahara 〒740-1211
Miwamachi Kamidatoko 〒740-1221
Miwamachi Ganne 〒740-1213
Miwamachi Kitanakayama 〒740-1202
Miwamachi Kurosawa 〒740-1212
Miwamachi Sazaka 〒740-1224
Miwamachi Shibukuma 〒740-1225
Miwamachi Shimobata 〒740-1242
Miwamachi Setonōchi 〒740-1219
Miwamachi Tanokuchi 〒740-1222
Miwamachi Nakagauchi 〒740-1218
Miwamachi Nagatani 〒740-1215
Miwamachi Namera 〒740-1223
Miwamachi Nishibata 〒740-1232
Miwamachi Hinata 〒740-1216
Miwamachi Yuritani 〒740-1214
Murono Kimachi 〒740-0021
Mochikuni 〒741-0085
Motomachi 〒740-0012
Monzenmachi 〒740-0031
Yamatemachi 〒740-0022
Yūmachikita 〒740-1455
Yūmachishintō 〒740-1432
Yūmachi Chidorigaoka 〒740-1441
Yūmachi Chūō 〒740-1428
Yūmachi Nishi 〒740-1454
Yūmachi Minato 〒740-1424
Yūmachi Minami 〒740-1451
Yūmachi Minamioki 〒740-1425
Yūmachi Yūsaki 〒740-1426
Yūmachi 〒740-1431
Yukaba 〒740-0301
Yukimasa 〒740-0316
Yokoyama 〒741-0081
Rokuroshi 〒741-0074

Start with the postal code, the prefecture, the city, the district, and then the number of the block and housing unit. Then end with the person’s name.
Here’s an example of how to write a Japanese address in English.
Ginza, Chuo-ku
Mr. Taro Tanaka

For more information on how to write a Japanese address, see this article.

To type the Japanese postal code, first type the character code '3012.' Then press ALT + X and Japan's postal code symbol will appear.

To obtain an address in Iwakuni for receiving mail, sign up for a virtual address service like MailMate. MailMate provides you with a mailing address for receiving Japanese mail and packages. MailMate can also be used for company registration in Iwakuni, along with mail handling for Japanese properties (e.g., akiya, Airbnb, minpaku, etc.)

There are two types of PO boxes available in Iwakuni. The first type of PO box is provided by Iwakuni Post and is only available for individuals with a daily volume of mail. The second type of PO box is provided by private services with no limits on daily mail volume. Learn more about how to open a PO box in Japan.

Japan Post offers Standard Mail for regular letters and small parcels, typically delivered in 2-3 days. Express Mail speeds this up to 1-2 days. Registered Mail adds tracking and insurance, requiring a signature on delivery. Yu-Pack handles larger parcels with tracking and insurance, delivered in 1-3 days. Letter Pack provides flat-rate options for documents and small items, with tracking available. EMS is for international express delivery, offering fast service to over 120 countries. Non-Standard Mail covers items exceeding standard size and weight limits. Private couriers like Yamato Transport's Takkyubin offer domestic and international parcel delivery with tracking. Sagawa Express provides similar services, including same-day delivery and refrigerated shipping. International couriers like DHL, FedEx, and UPS offer express delivery with tracking and insurance. Specialized services include Cool TA-Q-BIN for refrigerated items, Yu-Mail for books and CDs, and Smart Letter for small documents. These options cover varying needs for speed, cost, and security. For more information on international shipping options, check out this article.

To send mail or packages from Iwakuni to your home country using Japan Post, costs vary based on the service type and parcel weight. For Airmail, rates range from ¥2,050 for a 1kg parcel to ¥64,850 for a 30kg parcel. Surface Mail is cheaper, starting at ¥1,800 for a 1kg parcel to ¥21,000 for a 30kg parcel, but it takes longer. Factors affecting costs include weight, distance, and chosen service. Discounted rates are available for bulk shipments. For detailed rates and more information, visit the article here.

For sending mail and packages from Iwakuni via Japan Post, the weight limit is 30 kg for most services. The size restrictions include a maximum combined length and girth of 3 meters (300 cm). For smaller parcels, the combined length and girth should not exceed 2 meters (200 cm). Specific dimensions and weight limits may vary depending on the service chosen (Airmail, Surface Mail, etc.). For detailed information, refer to the article here.

To print an international parcel label for Japan Post, start by creating an account on Japan Post's International Mail My Page Service. Register both sender and recipient information, then select the desired shipping service, such as EMS or Airmail. Input the shipment details, including content description, shipping date, and parcel weight. After reviewing and confirming all entered information, use the provided printer icon to print the label. For more details, refer to this article.