The Retrieve Japan Postal Data API is a tool designed to provide accurate, structured, and up-to-date information on Japanese addresses based on a postal code. Its main purpose is to facilitate the identification of locations within Japan by providing data such as the prefecture, district, specific area, and their corresponding versions in kanji, kana, and the Roman alphabet (romaji). This functionality allows developers, companies, and digital services to easily integrate address validation and autocomplete into their platforms.
The API is simple to use: when a request is sent with a Japanese postal code, the system returns an organized set of data that includes administrative codes, official names, and transliterations.
In conclusion, the Retrieve Japan Postal Data API represents a modern, efficient, and reliable solution for handling geographic and postal information. Its clear structure, broad compatibility, and official support make it an essential tool for those seeking accuracy, automation, and quality in location data management in the Japanese context.
Returns complete address information based on the postal code, including prefecture, district, and
Postal Code Information - Endpoint Features
| Object | Description |
|---|---|
zipcode |
[Required] Enter a zip code |
{"status":200,"message":"","results":[{"oldzipcode":"100 ","zipcode":"1000001","prefcode":"13101","address1":"東京都","address2":"千代田区","address3":"千代田","kana1":"トウキョウト","kana2":"チヨダク","kana3":"チヨダ","alpha1":"Tokyo","alpha2":"Chiyodaku","alpha3":"Chiyoda"}]}
curl --location --request GET 'https://zylalabs.com/api/11094/retrieve+japan+postal+data+api/20924/postal+code+information?zipcode=1000001' --header 'Authorization: Bearer YOUR_API_KEY'
| Header | Description |
|---|---|
Authorization
|
[Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed. |
No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.
The Retrieve Japan Postal Data API returns detailed address information based on a postal code, including prefecture, city, district, and names in kanji, kana, and romaji.
Key fields in the response include `zipcode`, `prefcode`, `address1` (prefecture), `address2` (district), `address3` (specific area), and their corresponding kana and romaji representations.
The response data is structured in a JSON format, containing a status code, message, and a results array with detailed address information for the requested postal code.
The endpoint provides information such as the postal code, prefecture, district, specific area, and their names in kanji, kana, and romaji, facilitating accurate address identification.
Data accuracy is maintained through regular updates from official postal services and geographic databases, ensuring that the information reflects current administrative boundaries and naming conventions.
Typical use cases include address validation, autocomplete features in forms, geographic analysis, and integration into logistics and delivery systems to enhance location accuracy.
Users can customize their requests by specifying a valid Japanese postal code in the API call, which will return the corresponding address details for that specific code.
Users can utilize the returned data to display complete address information in applications, validate user input in forms, or enhance location-based services by providing accurate geographic context.
To obtain your API key, you first need to sign in to your account and subscribe to the API you want to use. Once subscribed, go to your Profile, open the Subscription section, and select the specific API. Your API key will be available there and can be used to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
If you don’t cancel before the 7th day, your free trial will end automatically and your subscription will switch to a paid plan under the same plan you originally subscribed to, meaning you will be charged and gain access to the API calls included in that plan.
The free trial ends when you reach 50 API requests or after 7 days, whichever comes first.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes, we offer a 7-day free trial that allows you to make up to 50 API calls at no cost, so you can test our APIs without any commitment.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
Service Level:
100%
Response Time:
1,309ms
Service Level:
100%
Response Time:
1,188ms
Service Level:
100%
Response Time:
165ms
Service Level:
100%
Response Time:
1,123ms
Service Level:
100%
Response Time:
429ms
Service Level:
100%
Response Time:
132ms
Service Level:
100%
Response Time:
5,233ms
Service Level:
100%
Response Time:
2,698ms
Service Level:
100%
Response Time:
595ms
Service Level:
100%
Response Time:
82ms
Service Level:
100%
Response Time:
52ms
Service Level:
100%
Response Time:
526ms
Service Level:
100%
Response Time:
46ms
Service Level:
100%
Response Time:
924ms
Service Level:
100%
Response Time:
38ms
Service Level:
100%
Response Time:
51ms
Service Level:
100%
Response Time:
76ms
Service Level:
100%
Response Time:
44ms
Service Level:
100%
Response Time:
35ms
Service Level:
100%
Response Time:
48ms