Postal Code Finder
Registry / Japan / Gumma Ken

Postal codes of Gumma Ken (Japan)

Comprehensive directory for the Gumma Ken hub. Our registry indexes 1,782 geocoded administrative entries across 19 distinct provinces.

Verified data profile for Gumma Ken

Based on 1,782 records, 1,779 postal code values and 1,532 mapped localities. Coordinate coverage is 100.0%.

1,782
Records
1,779
Postal identifiers
100.0%
Geocoded
370-0000
Example code
Postal code Locality Administrative path Coordinates
370-0000 Takasaki Shi Gumma Ken / Takasaki Shi 36.3228, 139.0209
370-0001 Nakaomachi Gumma Ken / Takasaki Shi 36.3699, 139.0273
370-0002 Hidakamachi Gumma Ken / Takasaki Shi 36.3599, 139.034
370-0003 Shimbotanakamachi Gumma Ken / Takasaki Shi 36.3608, 139.0407
370-0004 Inomachi Gumma Ken / Takasaki Shi 36.3554, 139.0265
370-0005 Hamajirimachi Gumma Ken / Takasaki Shi 36.3529, 139.0168

Related postal lookups

Japan
Country · 146,883 records
Hokkaido
Region · 9,436 records
Aichi Ken
Region · 9,253 records
Tokyo To
Region · 8,801 records
Kyoto Fu
Region · 6,925 records
Niigata Ken
Region · 6,051 records
Hyogo Ken
Region · 5,667 records
Osaka Fu
Region · 4,729 records
Fukushima Ken
Region · 4,282 records
Chiba Ken
Region · 4,232 records
Fukuoka Ken
Region · 4,147 records

Administrative area coverage

Use this page to browse the administrative hierarchy, compare representative postal codes and move to related areas without guessing slugs. The canonical route for this record set is /postal-codes/japan/gumma-ken.

How to use this lookup

  • Open the strongest child areas first when browsing a large administrative region.
  • Compare related postal prefixes before choosing a local import key.
  • Use the country dataset when you need full coverage beyond the visible sample.
Records
1,782
Database rows represented by this canonical route.
Postal identifiers
1,779
Distinct postal code values in this route.
Localities
1,532
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
370-0000
Sample code from Takasaki Shi.
Browse level
administrative hub
This page connects parent geography, child areas, prefix ranges and downloadable records.
Code Place Hierarchy Coordinates
370-0000 Takasaki Shi Gumma Ken / Takasaki Shi 36.3228, 139.0209
370-0001 Nakaomachi Gumma Ken / Takasaki Shi 36.3699, 139.0273
370-0002 Hidakamachi Gumma Ken / Takasaki Shi 36.3599, 139.034
370-0003 Shimbotanakamachi Gumma Ken / Takasaki Shi 36.3608, 139.0407
370-0004 Inomachi Gumma Ken / Takasaki Shi 36.3554, 139.0265
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
Hokkaido
Region · 9,436 records
Aichi Ken
Region · 9,253 records
Tokyo To
Region · 8,801 records
Kyoto Fu
Region · 6,925 records
Niigata Ken
Region · 6,051 records
Hyogo Ken
Region · 5,667 records
Osaka Fu
Region · 4,729 records
Fukushima Ken
Region · 4,282 records

Data questions

What does the Gumma Ken page cover?

It connects 1,782 postal records in Japan with child areas, related prefixes, examples and download/API paths.

How do I browse nearby areas from Gumma Ken?

Use the child-area cards, parent breadcrumbs and related prefix links to move through the canonical hierarchy.

Why are only representative rows visible?

Large administrative pages keep bounded HTML for speed and expose full coverage through dataset exports.

Search Gumma Ken postal codes and localities

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Geographic Context

Gumma Ken is a key administrative jurisdiction within Japan. Our registry provides a comprehensive overview of its internal divisions, facilitating precise spatial analysis and logistical mapping across its 19 provinces.

Postal code ranges covering Gumma Ken

Use these prefix ranges when you know the first digits or letters of a local postal identifier. Each link opens a country-level range with matching localities and coordinates.

All Japan prefixes
37
1,780 records in this hub, 1,779 codes nationwide.
38
2 records in this hub, 1,222 codes nationwide.

Navigate Gumma Ken provinces

Interactive Navigation: Markers represent geometric administrative centroids. Explore the regional registry by clicking on specific spatial clusters.

Provinces and postal code coverage

Showing top 19 of 19

Download the Gumma Ken postal code dataset

Access the complete administrative registry for Gumma Ken. Structured datasets available in XLSX, CSV, and JSON formats for immediate integration.

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Verified Scope: Gumma Ken Hub • Entities: 1,782 technical records

Frequently Asked Questions: Gumma Ken postal code guide

What is the postal structure for Gumma Ken?

Gumma Ken is represented in the Japan postal registry with verified coordinates and administrative hierarchy fields.

Can I download postal code data for Gumma Ken?

Yes. The dataset for Gumma Ken can be exported in CSV, Excel and JSON formats from the download section on this page.

How many subdivisions are mapped for Gumma Ken?

Gumma Ken currently aggregates 19 mapped subdivisions in the public registry.

What does the Gumma Ken page cover?

It connects 1,782 postal records in Japan with child areas, related prefixes, examples and download/API paths.

How do I browse nearby areas from Gumma Ken?

Use the child-area cards, parent breadcrumbs and related prefix links to move through the canonical hierarchy.