Saku (佐久市)Β is a city located in Nagano Prefecture, Japan, characterized by its scenic location in the Saku Basin and the upper reaches of the Shinano River. As of July 2023, the city has a population of approximately 97,454. Known for its historical significance, Saku was home to Ueda Castle during the Sengoku period. The city's economy is diversified, with key sectors including agriculture, manufacturing, and tourism. Saku also benefits from its proximity to Tokyo, facilitated by the Nagano Shinkansen, making it an attractive residential area for commuters.

πŸ’» Saku City Official Government Website

Districts and Postal Codes in Saku

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
Atobe γ€’385-0054
Arakoda γ€’385-0007
Imai γ€’385-0015
Irisawa γ€’384-0621
Iwamurada γ€’385-0022
Iwamuradakita γ€’385-0023
Innnai γ€’384-2201
Usuda γ€’384-0301
Uchiyama γ€’385-0031
Osawa γ€’385-0045
Otabe γ€’385-0033
Otai γ€’385-0009
Kajiya γ€’385-0041
Kasuga γ€’384-2205
Katsuma γ€’384-0302
Kamiotagiri γ€’384-0306
Kamihirao γ€’385-0002
Kitagawa γ€’384-0304
Kyowa γ€’384-2204
Kiyokawa γ€’384-0411
Kuwayama γ€’384-2101
Kou γ€’384-2104
Kosawa γ€’385-0005
Komiyama γ€’385-0047
Sakudairaeki Higashi γ€’385-0028
Sakudairaeki Minami γ€’385-0029
Sakudairaeki Kita γ€’385-0027
Sakurai γ€’385-0056
Sarukubo γ€’385-0011
Shionada γ€’384-2102
Shiga γ€’385-0006
Shimokitagiri γ€’384-0303
Shimogoe γ€’384-0414
Shimohirao γ€’385-0003
Seto γ€’385-0035
Takayagi γ€’385-0042
Taguchi γ€’384-0412
Tsukabara γ€’385-0025
Tokida γ€’385-0026
Tokiwa γ€’385-0032
Tomono γ€’385-0061
Toridemachi γ€’385-0043
Nakaotagiri γ€’384-0305
Nakagomi γ€’385-0051
Nagatoro γ€’385-0021
Naruse γ€’385-0016
Negishi γ€’385-0062
Nenei γ€’385-0012
Nozawa γ€’385-0053
Hara γ€’385-0052
Higashi Tateshina γ€’385-0063
Hiraka γ€’385-0034
Hiratsuka γ€’385-0024
Hirabayashi γ€’384-0622
Fuse γ€’384-2203
Honshinmachi γ€’385-0044
Maeyama γ€’385-0046
Mikawada γ€’385-0014
Michizuka γ€’385-0055
Mibun γ€’384-0413
Mimayose γ€’384-2103
Motai γ€’384-2206
Michizuki γ€’384-2202
Yashima γ€’384-2105
Yasuhara γ€’385-0004
Yawata γ€’384-2106
Yuhara γ€’384-0307
Yokone γ€’385-0001
Yokowa γ€’385-0013
Yomogida γ€’384-2107

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

There are two types of PO boxes available in Saku. The first type of PO box is provided by Saku 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 Saku to your home country using Japan Post, costs vary based on the service type and parcel weight. For Airmail, rates range from Β₯2,050 for a 1kg parcel to Β₯64,850 for a 30kg parcel. Surface Mail is cheaper, starting at Β₯1,800 for a 1kg parcel to Β₯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 Saku 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.