About Postcode 299-5107
This postal code is assigned to Onjuku Machi District Municipality Isumi Gun, Chiba Ken, Japan. This location-level postal code helps ensure accurate mail delivery and location identification.
Postal Code Format
Japan uses numeric postal codes with 7 digits (example: 0600000). In our directory, these codes are organized from prefectures down to districts.
- 29 — Prefecture (Chiba Ken)
- 9- — Municipality (Isumi Gun)
- 51 — District (Onjuku Machi)
How to Use This Postcode 299-5107
When sending mail or packages to this area, use the postal code below to ensure accurate and timely delivery.
Address format example:
Recipient Name
House #, Street Name
Onjuku Machi
Isumi Gun, Chiba Ken
299-5107
Japan
Domestic Mail
Include this postcode on all letters and packages sent within Japan.
International Mail
For international deliveries, include "Japan" on the last address line after the postcode.
Frequently Asked Questions
What area does this postcode cover?
This postcode covers Chiba Ken → Isumi Gun → Onjuku Machi in Japan.
Is this a valid List Post Code?
Yes. 299-5107 is an active postcode for Chiba Ken → Isumi Gun → Onjuku Machi in Japan. It follows the 7-character format used in this country.
How do I find the postal code for a specific address?
Search by prefecture, municipality, and district to find the correct postcode in Japan. Search Postcodes
Found incorrect info for 299-5107?
Useful Resources
Developer API
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Free JSON for postcode 299-5107.
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