JPAsia · East Asia

Japan Address Validation API

Validate and standardise Japan addresses in real time. Get a matched address, geocoordinates, confidence score, and 郵便番号 (Yūbin bangō) data via a single API call.

NNN-NNNN
郵便番号 (Yūbin bangō)
OpenStreetMap
Data Source
Japanese
Languages
HIGH
Max Confidence

Japan Address Validation Demo

Confidence:HIGH
POST /enrich — ResponseSample
{
  "_note": "Sample response — enter any address and click Validate for live data",
  "valid": true,
  "canonical_address": "1-1 Chiyoda, Chiyoda City, Tokyo 100-8111",
  "confidence": "HIGH",
  "delivery_risk": "low",
  "matched_address": {
    "line1": "1-1 Chiyoda",
    "city": "Chiyoda",
    "postal_code": "Tokyo 100-8111",
    "country": "Japan",
    "iso2": "JP"
  },
  "geocode": {
    "lat": 35.6762,
    "lng": 139.6503
  },
  "data_source": "OpenStreetMap",
  "issues": []
}

Japan Address Format

Japanese addresses are written large-to-small: prefecture, city, ward/district (ku/machi), chome (block), ban (building block number), and gō (lot number). Western-style addresses reverse this order. The Address Agent accepts natural-language input in both formats.

Postal Code Name
郵便番号 (Yūbin bangō)
Format
NNN-NNNN
Official Languages
Japanese
Sample address:
1-1 Chiyoda, Chiyoda City, Tokyo 100-8111
Major cities:
TokyoOsakaYokohamaNagoyaSapporoFukuokaKyotoKobe

Integration Code

curl -X POST https://agent.apitier.com/v1/enrich \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"address": "1-1 Chiyoda, Chiyoda City, Tokyo 100-8111"}'

Frequently Asked Questions

What address format does Japan use?
Japanese addresses are written large-to-small: prefecture, city, ward/district (ku/machi), chome (block), ban (building block number), and gō (lot number). Western-style addresses reverse this order. The Address Agent accepts natural-language input in both formats.
What is a 郵便番号 (Yūbin bangō) in Japan?
Japan uses a 郵便番号 (Yūbin bangō) with the format NNN-NNNN to identify delivery areas. The APITier Address Agent API validates and standardises addresses including the 郵便番号 (Yūbin bangō) as part of the response.
How do I validate a Japan address via API?
Send a POST request to https://agent.apitier.com/v1/enrich with your address string in the request body and your API key in the x-api-key header. The response includes the standardised Japan address, geocoordinates (lat/lng), a confidence score (HIGH/MEDIUM/LOW), and data source information.

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