Sanmu (山武市) is a city in Chiba Prefecture, Japan, established on March 27, 2006, through the merger of the towns of Sanbu, Matsuo, Narutō, and the village of Hasunuma. The city has a population of approximately 50,321 as of November 2020, covering an area of 146.38 square kilometers. Located in the northeastern part of the prefecture, Sanmu is part of the Tokyo metropolitan employment area. It is known for its flatlands, agriculture, and woodworking industries, and experiences a humid subtropical climate with warm summers and cool winters. The city also serves as a bedroom community for Chiba and Tokyo.

💻 Sanmu City Official Government Website

Districts and Postal Codes in Sanmu

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
Asō Shinden 〒289-1203
Ametsubo 〒289-1213
Itagawa 〒289-1201
Itatsuki 〒289-1335
Itanaka Shinden 〒289-1222
Ichiba 〒289-1333
Inōchi 〒289-1304
Uekusa 〒289-1216
Ogi 〒289-1211
Okiwatashi 〒289-1225
Oyada 〒289-1332
Kamiyokoji 〒289-1313
Kawasaki 〒289-1331
Kido 〒289-1301
Kibara 〒289-1212
Kusabuka 〒289-1315
Koizumi 〒289-1317
Gokita 〒289-1316
Komatsu 〒289-1302
Sanekado 〒289-1221
Shiizaki 〒289-1205
Shibahara 〒289-1312
Shima 〒289-1325
Shimado 〒289-1342
Shimofuda 〒289-1217
Shimoyokoji 〒289-1314
Shirahata 〒289-1306
Shingyōji 〒289-1343
Tsube 〒289-1345
Terazaki 〒289-1318
Toda 〒289-1204
Tonodai 〒289-1324
Tomiguchi 〒289-1323
Tomida 〒289-1321
Tomida Gōya 〒289-1322
Nakatsuta 〒289-1202
Narutō 〒289-1326
Niinomi 〒289-1344
Nobori 〒289-1341
Hasunumai 〒289-1801
Hasunumani 〒289-1805
Hasunumaha 〒289-1806
Hasunumahira 〒289-1804
Hasunumaho 〒289-1803
Hasunumaro 〒289-1802
Haniya 〒289-1223
Hayafune 〒289-1311
Himeshima 〒289-1327
Hyugadai 〒289-1206
Matsuo Machiiwaita 〒289-1524
Matsuo Machio Otsutsumi 〒289-1527
Matsuo Machiogawa 〒289-1507
Matsuo Machiorito 〒289-1535
Matsuo Machikashikehongō 〒289-1537
Matsuo Machikaburaki 〒289-1511
Matsuo Machikamiokura 〒289-1506
Matsuo Machikanno 〒289-1505
Matsuo Machikigatana 〒289-1531
Matsuo Machigotanda 〒289-1523
Matsuo Machikowa 〒289-1504
Matsuo Machisaruo 〒289-1513
Matsuo Machishimo Okura 〒289-1517
Matsuo Machishimono 〒289-1534
Matsuo Machi Shimonogō 〒289-1536
Matsuo Machi Takatomi 〒289-1522
Matsuo Machitakenosato 〒289-1532
Matsuo Machita Koe 〒289-1516
Matsuo Machihatta 〒289-1512
Matsuo Machi Hikkoshi 〒289-1502
Matsuo Machihirone 〒289-1533
Matsuo Machi Fujimidai 〒289-1515
Matsuo Machi Matsuo 〒289-1514
Matsuo Machi Mizufuka 〒289-1526
Matsuo Machi Motogashiwa 〒289-1521
Matsuo Machimoto Mizufuka 〒289-1525
Matsuo Machiyatsu 〒289-1503
Matsuo Machiyamamuro 〒289-1501
Matsugaya 〒289-1303
Misugino 〒289-1224
Muryō 〒289-1218
Motosuca 〒289-1305
Mori 〒289-1214
Yabe 〒289-1215
Yusaka 〒289-1328
Yokota 〒289-1226
Wada 〒289-1334

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 Sanmu 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 Sanmu, along with mail handling for Japanese properties (e.g., akiya, Airbnb, minpaku, etc.)

There are two types of PO boxes available in Sanmu. The first type of PO box is provided by Sanmu 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 Sanmu 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 Sanmu 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.