Neighborhood · Ibaraki Ken · Sashima Gun · Goka Machi · Koshu · Japan

Koshu Postal code

306-0304Neighborhood

Looking for the postal code for Koshu? This neighborhood is located in Ibaraki Ken · Sashima Gun · Goka Machi · Koshu · Japan. Use our directory to find the correct postal code for Koshu and nearby locations.

Complete Location Hierarchy

Neighborhoods are the most local delivery level in Japan. Matching the correct neighborhood with the right postal code helps reduce failed deliveries and return-to-sender errors.

Ibaraki Ken
—
Prefecture
Sashima Gun
—
Municipality
Goka Machi
—
District
306-0304
Neighborhood · Current

Interactive map of Koshu · Japan — postal codes & coordinates

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Postal code for this area

Koshu uses the following postal code.

306-0304

Developer API

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Free JSON for Koshu.

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API reference
Example request
GEThttps://api.listpostcode.com/v1/countries/JP/resolve?path=/ibaraki-ken/sashima-gun/goka-machi/koshu-306-0304
curl -H "x-api-key: YOUR_API_KEY" \
  "https://api.listpostcode.com/v1/countries/JP/resolve?path=/ibaraki-ken/sashima-gun/goka-machi/koshu-306-0304"