Postal Code Finder
Registry / Japan / Postal code prefixes / 01 / 018-2101 /

Postal code 018-2101 in Kamiiwakawa, Japan

Postal code 018-2101 is mapped to 1 locality record in Japan with administrative hierarchy and coordinates.

Verified data profile for Postal code 018-2101

Based on 1 records, 1 postal code values and 1 mapped localities. Coordinate coverage is 100.0%.

1
Records
1
Postal identifiers
100.0%
Geocoded
018-2101
Example code
Postal code Locality Administrative path Coordinates
018-2101 Kamiiwakawa Akita Ken / Yamamoto Gun / Mitane Cho 40.0327, 140.1822

Related postal lookups

Japan
Country
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Prefix 01
Postal code range · 2,299 records
018-1854
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018-1855
Nearby postal code · 1 records
018-1856
Nearby postal code · 1 records
018-1857
Nearby postal code · 1 records
018-2102
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018-2103
Nearby postal code · 1 records

Postal code validation data

Use this page to validate one postal code or locality against real parent areas, nearby records and downloadable source rows. The canonical route for this record set is /postal-codes/japan/code/0182101.

Records
1
Database rows represented by this canonical route.
Postal identifiers
1
Distinct postal code values available for this page.
Localities
1
Mapped place names or administrative entries.
Coordinate coverage
100.0%
Rows with latitude and longitude available.
Example
018-2101
Sample code from Kamiiwakawa.
Code Place Hierarchy Coordinates
018-2101 Kamiiwakawa Akita Ken / Yamamoto Gun / Mitane Cho 40.0327, 140.1822
Download postal data
CSV, JSON and XLSX exports for research, validation and data products.
Use the API
Query postal codes by country, place name, region or code prefix.
Implementation notes
Field definitions, canonical paths and practical lookup guidance.

Useful related pages

Japan
Country
Postal code prefixes
Postal code prefixes
Prefix 01
Postal code range · 2,299 records
018-1854
Nearby postal code · 1 records
018-1855
Nearby postal code · 1 records
018-1856
Nearby postal code · 1 records
018-1857
Nearby postal code · 1 records
018-2102
Nearby postal code · 1 records
018-2103
Nearby postal code · 1 records

Data questions

How should I validate 018-2101?

Validate the postal identifier together with country, locality and administrative hierarchy fields, not as a standalone global pattern.

What context is available for this record?

The page includes the parent country, related prefix or nearby codes, coordinates when available and source rows for download/API workflows.

Postal code range

This code belongs to the 01 prefix range for Japan.

View all 01 postal codes

How to validate postal code 018-2101

Treat 018-2101 as a text value, not a number. Postal identifiers can contain leading zeroes, spaces or letters in other countries, so applications should validate the country and original string together. For this page, the code is valid when it appears with one of the mapped localities below and the administrative path belongs to Japan.

Japan lookup
Open the country-level hierarchy and dataset exports.
Browse all prefixes
Compare this code with neighboring country ranges.
Prefix 01
View related codes in the same prefix range.

Mapped localities

Kamiiwakawa
Akita Ken / Yamamoto Gun / Mitane Cho
40.0327, 140.1822

Common lookup mistakes

A postal code can map to more than one locality record, and the same locality name can appear in different administrative areas. Always compare the country, postal code, place name and region together before treating a match as final.

Coordinates on this page are useful for map previews and approximate area checks. They should be read as locality or postal-area centroids, not as exact delivery addresses. For bulk validation, download the country dataset and keep this canonical URL as the human-readable reference for the code.

Nearby postal code lookups

These neighboring identifiers help compare adjacent code ranges inside Japan. Each link opens a canonical postal-code page with its mapped places and administrative context.

018-1854
Uchikawakurotsuchi
018-1855
Futsunaitomita
018-1856
Futsunaishimosannai
018-1857
Uchikawaogura
018-2102
Amasegawa
018-2103
Koikawa
018-2104
Kado
018-2301
Shitobashi