Registry / Japan / Postal code prefixes / 03 /

Japan postal codes starting with 03

Prefix 03 contains 2,236 postal code records across 2,466 mapped localities in Japan.

Verified data profile for Japan prefix 03

Based on 2,730 records, 2,236 postal code values and 2,466 mapped localities. Coordinate coverage is 100.0%.

2,730

Records

2,236

Postal identifiers

100.0%

Geocoded

030-0111

Example code

Postal code	Locality	Administrative path	Coordinates
030-0111	Arakawa	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0112	Yatsuyaku	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0113	Dainitonyamachi	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0121	Myoken	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0122	Nojiri	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0123	Oyasawa	Aomori Ken / Aomori Shi	40.7911, 140.7634

Prefix coverage and examples

Use this page to understand country coverage, postal code formats, prefixes and the most useful child pages for lookup or download. The canonical route for this record set is /postal-codes/japan/codes/03.

How to use this lookup

Use the sample rows to verify what the prefix actually covers.
Compare neighboring prefixes when a city or district spans multiple ranges.
Download the country dataset when you need every code in the prefix.

Records

2,730

Database rows represented by this canonical route.

Postal identifiers

2,236

Distinct postal code values in this route.

Localities

2,466

Mapped place names or administrative entries.

Coordinate coverage

100.0%

Rows with latitude and longitude available.

Detected format

7 digits (NNN-NNNN)

Japanese postal codes use seven digits, commonly formatted with a hyphen after the third digit.

Example

030-0111

Sample code from Arakawa.

Prefix use

range lookup

Use this range when you know the first digits or letters but need matching localities.

Code	Place	Hierarchy	Coordinates
030-0111	Arakawa	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0112	Yatsuyaku	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0113	Dainitonyamachi	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0121	Myoken	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0122	Nojiri	Aomori Ken / Aomori Shi	40.7911, 140.7634

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 · 146,883 records

All prefixes

Postal code prefixes · 142,577 records

Prefix 94

Postal code range · 2,680 records

Prefix 91

Postal code range · 2,412 records

Prefix 01

Postal code range · 2,299 records

Prefix 67

Postal code range · 2,277 records

Prefix 44

Postal code range · 2,158 records

Prefix 86

Postal code range · 2,139 records

Prefix 02

Postal code range · 2,107 records

Prefix 99

Postal code range · 2,093 records

Data questions

What does this postal code prefix cover?

This page lists representative records, localities and nearby ranges for the Japan prefix 03 prefix in Japan.

Is the complete prefix dataset shown here?

The HTML page shows a bounded sample from 2,236 matching identifiers and points to the country export for complete coverage.

How should I use a prefix page?

Use it to narrow a lookup when you know the first characters of the code, then confirm locality, region and coordinates.

Related prefix ranges in Japan

Compare this range with other active postal code prefixes from the same country-level directory.

2,680 codes across 2,415 localities.

2,412 codes across 2,178 localities.

2,299 codes across 2,151 localities.

2,277 codes across 2,167 localities.

2,158 codes across 2,039 localities.

2,139 codes across 1,873 localities.

2,107 codes across 2,021 localities.

2,093 codes across 1,793 localities.

Representative postal code examples

This page keeps a bounded sample for fast crawling and links each code to its canonical lookup page. Use the country export when you need the full prefix dataset.

Postal code	Locality	Region	Coordinates
030-0111	Arakawa	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0112	Yatsuyaku	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0113	Dainitonyamachi	Aomori Ken / Aomori Shi	40.7922, 140.7522
030-0121	Myoken	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0122	Nojiri	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0123	Oyasawa	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0124	Tamogino	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0125	Yotsuishi	Aomori Ken / Aomori Shi	40.7911, 140.7634
030-0131	Tonyamachi	Aomori Ken / Aomori Shi	40.7886, 140.7579
030-0132	Yokochi	Aomori Ken / Aomori Shi	40.7865, 140.7564
030-0133	Moya	Aomori Ken / Aomori Shi	40.7865, 140.7564
030-0134	Goshizawa	Aomori Ken / Aomori Shi	40.7865, 140.7564
030-0135	Shimmachino	Aomori Ken / Aomori Shi	40.7865, 140.7564
030-0136	Ushitate	Aomori Ken / Aomori Shi	40.7865, 140.7564
030-0137	Oroshimachi	Aomori Ken / Aomori Shi	40.7852, 140.7546
030-0141	Uwano	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0142	Nogi	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0143	Obatakezawa	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0144	Obetsunai	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0145	Kanehama	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0151	Takada	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0152	Nozawa	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0153	Kodate	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0154	Nyunai	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0155	Otani	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0180	Dainitonyamachi	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0181	青森朝日放送　株式会社	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0183	Oroshimachi	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0184	青森県立図書館	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0185	Oroshimachi	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0186	Toiyacho	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0188	八甲田ロープウェー　株式会社	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0192	富士通　株式会社　青森システムラボラトリ	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0196	青森公立大学	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0197	Arakawa	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0198	Arakawa	Aomori Ken / Aomori Shi	40.7891, 140.7571
030-0801	Shimmachi	Aomori Ken / Aomori Shi	40.8264, 140.7395
030-0802	Honcho	Aomori Ken / Aomori Shi	40.8274, 140.7499
030-0803	Yasukata	Aomori Ken / Aomori Shi	40.8283, 140.7411
030-0811	Aoyagi	Aomori Ken / Aomori Shi	40.8286, 140.7575
030-0812	Tsutsumimachi	Aomori Ken / Aomori Shi	40.8233, 140.7578
030-0813	Matsubara	Aomori Ken / Aomori Shi	40.8192, 140.7625
030-0821	Katta	Aomori Ken / Aomori Shi	40.8171, 140.7563
030-0822	Chuo	Aomori Ken / Aomori Shi	40.8186, 140.7478
030-0823	Hashimoto	Aomori Ken / Aomori Shi	40.8215, 140.7525
030-0841	Okuno	Aomori Ken / Aomori Shi	40.8126, 140.7608
030-0842	Uramachi	Aomori Ken / Aomori Shi	40.8123, 140.7519
030-0843	Hamada	Aomori Ken / Aomori Shi	40.8123, 140.7519
030-0844	Katsuragi	Aomori Ken / Aomori Shi	40.8121, 140.7431
030-0845	Midori	Aomori Ken / Aomori Shi	40.8123, 140.7519
030-0846	Aoba	Aomori Ken / Aomori Shi	40.8123, 140.7519
030-0847	Higashiono	Aomori Ken / Aomori Shi	40.8123, 140.7519
030-0851	Asahicho	Aomori Ken / Aomori Shi	40.8142, 140.7386
030-0852	Ono	Aomori Ken / Aomori Shi	40.8149, 140.7323
030-0853	Kanazawa	Aomori Ken / Aomori Shi	40.8118, 140.7311
030-0854	Sentomicho	Aomori Ken / Aomori Shi	40.8153, 140.7268
030-0855	Kitakanazawa	Aomori Ken / Aomori Shi	40.8184, 140.7326
030-0856	Nishiono	Aomori Ken / Aomori Shi	40.8149, 140.7323
030-0861	Nagashima	Aomori Ken / Aomori Shi	40.8212, 140.7415
030-0862	Furukawa	Aomori Ken / Aomori Shi	40.8232, 140.7358

Showing 60 representative records from 2,236 matching codes to keep the page fast and crawlable. Download the Japan dataset for complete coverage.